Pradhan, Jaya Prakash (2011): Regional heterogeneity and firms’ innovation: the role of regional factors in industrial R&D in India.
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This study makes an early attempt to estimate the magnitude and intensity of manufacturing firms’ R&D by Indian states during the period 1991‒2008 and analyses the role of regional factors on firm-level R&D activities. As there is little research on state-wise R&D performance of firms in India, this study serves an important contribution to the academic and policy realm. It has brought out the fact the total manufacturing R&D investment in India is unevenly distributed regionally with a few states accounting for disproportionate share of it. Regional heterogeneity or inter-state disparities in R&D has increased between the 1990s and the first decade of the twenty-first century. In view of this persistent regional heterogeneity in R&D, the study has developed and estimated an empirical model for a sample of 4545 Indian manufacturing firms with R&D facilities located in single state and that explicitly includes regional factors as probable factors affecting R&D. The three-step Censored Quantitle Regression results confirm that regional factors play an important role in shaping the R&D intensity of the sample of firms. This led us to some useful policy suggestions for regional governments to promote local firms’ R&D activities.
|Item Type:||MPRA Paper|
|Original Title:||Regional heterogeneity and firms’ innovation: the role of regional factors in industrial R&D in India|
|English Title:||Regional Heterogeneity and Firms’ Innovation: The Role of Regional Factors in Industrial R&D in India|
|Keywords:||Regional heterogeneity, R&D, manufacturing firms, Indian states, censored quantitle regression.|
|Subjects:||O - Economic Development, Technological Change, and Growth > O1 - Economic Development > O18 - Urban, Rural, Regional, and Transportation Analysis; Housing; Infrastructure
O - Economic Development, Technological Change, and Growth > O3 - Technological Change; Research and Development; Intellectual Property Rights > O30 - General
O - Economic Development, Technological Change, and Growth > O3 - Technological Change; Research and Development; Intellectual Property Rights > O32 - Management of Technological Innovation and R&D
C - Mathematical and Quantitative Methods > C2 - Single Equation Models; Single Variables > C21 - Cross-Sectional Models; Spatial Models; Treatment Effect Models; Quantile Regressions
L - Industrial Organization > L6 - Industry Studies: Manufacturing > L60 - General
|Depositing User:||Jaya Prakash Pradhan|
|Date Deposited:||17. Jan 2011 21:19|
|Last Modified:||12. Feb 2013 04:29|
Allred, B.B. and H.K. Steensma (2005), ‘The influence of industry and home country characteristics on firms' pursuit of innovation’, Management International Review, 45, pp. 383–412.
Amiti, M. (1998), ‘New trade theories and industrial location in the EU: A survey of evidence’, Oxford Review of Economic Policy, 14(2), pp. 45–53.
Asheim, B.T. and M. Gertler (2005), ‘The Geography of Innovation: Regional Innovation Systems, in J. Fagerberg, J., D. Mowery and R. Nelson (eds.), The Oxford Handbook of Innovation, pp. 291–317, Oxford: Oxford University Press.
Bania, N., L.N. Calkins and D.R. Dalenberg (1996), ‘The effects of regional science and technology policy on the geographic distribution of industrial R&D laboratories’, Journal of Regional Science, 32(2), pp. 209–228.
Belenzon, S. And T. Berkovitz (2010), ‘Innovation in Business Groups’, Management Science, 56 (3) pp. 519–535.
Bell, M. and K. Pavitt (1995), ‘The Development of Technological Capabilities’, in I.U. Haque, M. Bell, C. Dahlman, S. Lall and K. Pavitt (1995) (eds.) Trade, Technology, and International Competitiveness, EDI Development Studies, pp. 59–101, Wasignton, DC: The World Bank.
Birdsall and Rhee (1993), ‘Does Research and Development Contribute to Economic Growth in Developing Countries?’, Policy Research Working Paper, No.1221, Washington, DC: The World Bank.
Braconier, H. (2000), ‘Do Higher Per Capita Incomes Lead to More R&D Expenditure?’, Review of Development Economics, 4(3), pp. 244–257.
Braga, H. and L. Willmore (1991), ‘Technological Imports and Technological Effort: An Analysis of their Determinants in Brazilian Firms’, Journal of Industrial Economics, 39(4), pp. 421–432.
Breschi, S., F. Malerba and L. Orsenigo (2000), ‘Technological regimes and Schumpeterian patterns of innovation’, Economic Journal, 110, pp. 388–410.
Caniëls, M.C.J. (1996), ‘Regional Differences in Technology: Theory and Empirics’, MERIT Research Memoranda, No. 96–005, Maastricht: Maastricht Economic Research Institute on Innovation and Technology.
Cantwell, J. and L. Piscitello (2002), ‘The location of technological activities of MNCs in European regions: The role of spillovers and local competencies’, Journal of International Management, 8(1), pp. 69–96.
Cantwell, J. and L. Piscitello (2005), ‘Recent Location of Foreign-owned Research and Development Activities by Large Multinational Corporations in the European Regions: The Role of Spillovers and Externalities’, Regional Studies, 39(1), pp. 1–16.
Chang, S. and J. Hong (2000), ‘Economic performance of group-affiliated companies in Korea: Intragroup resource sharing and internal business transactions’, Academy of Management Journal, 43(3), pp, 429–448.
Chang, S-J, C.-N. Chung, I.P. Mahmood (2006), ‘When and how does business group affiliation promote firm innovation? A tale of two emerging economies’, Organization Science, 17(5), pp. 637–656.
Chay, K.Y. and J.L. Powell (2001), ‘Semiparametric Censored Regression Models’, Journal of Economic Perspectives, 15 (4), pp. 29–42.
Chernozhukov, V. and H. Hong (2002), ‘Three-Step Censored Quantile Regression and Extramarital Affairs’, Journal of American Statistical Association, 97 (459), pp. 872–882.
Cheung, K.-Y. and P. Lin (2004), ‘Spillover effects of FDI on innovation in China: Evidence from the provincial data’, China Economic Review, 15, pp.25–44.
Cohen, W.M. (1995), ‘Empirical Studies of Innovative Activity’, in Stoneman, P. (ed.), Handbook of the Economics of Innovation and Technological Change, pp. 182–264, Oxford: Blackwell.
Cohen, W.M., R.R. Nelson and J.P. Walsh (2002), ‘Links and impacts: the influence of public research on industrial R&D’, Management Science, 48(1), pp. 1–23.
Cooke, P., M.G. Uranga and G. Etxebarria (1998), ‘Regional systems of innovation: an evolutionary perspective’, Environment and Planning, 30, pp. 1563–1584.
Damijan, J.P., C. Kostevc and S. Polanec (2010), ‘From Innovation to Exporting or Vice Versa?’, The World Economy, 33(3), 374–398.
David, P.A., B. Hall and A. Toole (2000), ‘Is public R&D a complement or substitute for private R&D? A review of the econometric evidence’, Research Policy, 29(4–5), pp. 497–529.
De Beule, F. (2010), ‘The Role FDI in Technology Innovation in India’, in Siddharthan, N.S. and K. Narayanan (eds.) Indian and Chinese Enterprises: Global Trade, Technology and Investment Regimes, pp. 102–116, New Delhi: Routledge.
De, P. and B. Ghosh (2005), ‘Effects of infrastructure on regional income in the era of globalization: new evidence from South Asia’, Asia-Pacific Development Journal, 12(1), pp. 81–107.
Del Bo, C., M. Florio and G. Manzi (2010), ‘Regional Infrastructure and Convergence: Growth Implications in a Spatial Framework’, Transition Studies Review, 17(3), pp. 475–493.
Demurger, S. (2001), ‘Infrastructure Development and Economic Growth: An Explanation for Regional Disparities in China?’, Journal of Comparative Economics, 29, 95–117.
Desmet, K. and S.L. Parente (2010), ‘Bigger is better: market size, demand elasticity, and innovation’, International Economic Review, 51(2), pp. 319–333.
Doloreux, D. and S. Parto (2004), ‘Regional Innovation Systems: Current Discourse and Challenges for Future Research’, ERSA conference paper, European Regional Science Association.
Ericson, R. and A. Pakes (1995), ‘Markov-perfect industry dynamics: A framework for empirical work’, Review of Economic Studies, 62, pp. 53–82.
Falk, M. (2006), ‘What drives business Research and Development (R&D) intensity across Organisation for Economic Co-operation and Development (OECD) countries?’, Applied Economics, 38(5), pp. 533–547.
Feldman, M.P. (1993), ‘An examination of the geography of innovation’, Industrial and Corporate Change, 2(1), pp. 451–470.
Feldman, M.P. (1999), ‘The New Economics of Innovation, Spillovers and Agglomeration: A Review of Empirical Studies’, Economics of Innovation and New Technology, 8(1&2), pp. 5–25.
Fishman, A. and R. Rob (1999), ‘The Size of Firms and R&D Investment’, International Economic Review, 40(4), pp. 915–931.
Forbes, N. and D. Wield (2000), ‘Managing R&D in technology-followers’, Research Policy, 29(9), pp. 1095–1109.
Furman, J.L., M.E. Porter and S. Stern (2002), ‘The determinants of national innovative capacity’, Research Policy, 31(6), pp. 899–933.
Geroski, P.A. (1990), ‘Innovation, technological opportunity, and market structure’, Oxford Economic Papers, 42, pp. 586–602.
Ghosh, S. (2009), ‘R&D in Indian manufacturing enterprises: what shapes it?’, Economics of Innovation and New Technology, 18(4), pp. 337–352.
Gilman, D. (2010), The new geography of global innovation, The Global Markets Institute Report (September 20), Goldman Sachs & Co.
Griliches, Z. (1998), R&D and Productivity: The Econometric Evidence, Chicago: University of Chicago Press.
Guillén, M.F. (2000) ‘Business Groups in Emerging Economies: A Resource-Based View’, The Academy of Management Journal, 43(3), pp. 362–380.
Gumbau-Albert, M. and J. Maudos (2009), ‘Patents, technological inputs and spillovers among regions’, Applied Economics, 41(12), pp. 1473–1486.
Gunasekara, C. (2006), ‘Role of Universities in the Development of Regional Innovation Systems’, The Journal of Technology Transfer, 31(1), pp. 101–113.
Gustavsen, G.W., D. Joliffe and K. Rickertsen (2008), ‘Censored quantile regression and purchases of ice cream’, Food Economics, 5(3), pp. 152–163.
Hagedoorn, J. (1996), ‘Innovation and Entrepreneurship: Schumpeter Revisited’, Industrial and Corporate Change, 5(3), pp. 883‒896.
Hall, B.H. (2002), ‘The financing of research and development’, Oxford Review of Economic Policy, 18(1), pp. 35–51.
Hall, B.H. and J. Lerner (2010), ‘Financing R&D and innovation’, UNU-MERIT Working Paper, No. 2010–012, Maastricht: United Nations University - Maastricht Economic and Social Research and Training Centre on Innovation and Technology.
Helpman, E., M. Melitz, and S. Yeaple (2004), ‘Export versus FDI with heterogeneous firms’, American Economic Review, 94(1), pp. 300–316.
Hill, E.W. (Ned), H. Wial and H. Wolman (2008), ‘Exploring Regional Economic Resilience’, IURD Working Paper, No. WP-2008–04, Institute of Urban and Regional Development, University of California.
Himmelberg, C.P. and B.C. Petersen (1994), ‘R&D and Internal Finance: A Panel Study of Small Firms in High-Tech Industries’, The Review of Economics and Statistics, 76(1), pp. 38–51.
Hughes, A. (2006), ‘University industry linkages and UK science and innovation policy’, ESRC Centre for Business Research Working Paper, No.326. Cambridge: University of Cambridge.
Hughes, K. (1986), Exports and Technology, Cambridge: Cambridge University Press.
Hundley, G., Jacobson, C.K. and Park, S.H. (1996), ‘Effects of Profitability and Liquidity on R&D Intensity: Japanese and U.S. Companies Compared’, The Academy of Management Journal, 39(6): 1659–1674.
Hymer, S (1960), The International Operations of National Firms: A Study of Direct Foreign Investment, MIT Ph.D. Thesis, published in 1976, Cambridge, Mass.: MIT Press.
Impullitti, G. and O. Licandro (2010), ‘Trade, Firm selection, and innovation: the competition channel’, UFAE-IAE Working Paper, No. 841.10, Barcelona: Unitat de Fonaments de l'Anàlisi Econòmica and Institut d'Anàlisi Econòmica.
Jovanovic, B. (1982), ‘Selection and the evolution of industry’, Econometrica, 50, pp. 649–670.
Kathuria, V. (2008), ‘The impact of FDI inflows on R&D investment by medium- and high-tech firms in India in the post-reform period’, Transnational Corporations, 17(2), pp. 45–66.
Katrak, H. (1985), ‘Imported Technology, Enterprise Size and R&D in a Newly Industrializing Country: The Indian Experience’, Oxford Bulletin of Economics and Statistics, 47, pp. 213−230.
Kazakova, N. and V. Atoyan (2006), ‘The role of universities in the development of innovation systems’, International Journal of Foresight and Innovation Policy, 2(2), pp. 199 – 213.
Khanna, T. and K. Palepu (2000), ‘The Future of Business Groups in Emerging Markets: Long Run Evidence from Chile’, Academy of Management Journal. 43(3), pp. 268–285.
Kirat, T. and Y. Lung (1999), ‘Innovation and proximity: territories as loci of collective learning processes’, European Urban and Regional Studies, 6(1), pp. 27–38.
Kroll, H. and A. Zenker (2009), ‘An analysis of the development of R&D expenditure at regional level in the light of the 3% target’, Luxembourg: Publications Office of the European Union.
Krugman, P. (1991), ‘Increasing Returns and Economic Geography’, Journal of Political Economy, 99(3), pp.483–499.
Kumar, N. and A. Aggarwal (2005), ‘Liberalization, outward orientation and in-house R&D activity of multinational and local firms: A quantitative exploration for Indian manufacturing’, Research Policy, 34(4), pp. 441–460.
Lall, S. (1983), ‘Determinants of R&D in an LDC: The Indian Engineering Industry’, Economic Letters, 37 (3), pp.379−383.
Lall, S. (1995) ‘The Creation of Comparative Advantage: The Role of Industrial Policy’, in Irfan-ul-Haque et. Al. (1995) (eds.) Trade, Technology, and International Competitiveness, pp. 103−134, Washington, D.C.: The World Bank.
Lin, H.C. (2010), ‘Technology Diffusion and Global Welfare Effects: Imitative R&D vs. South-Bound FDI’, Structural Change and Economic Dynamics, 21(4), pp. 231–247.
Liu, M.-C. and S.-H. Chen (2003), ‘International R&D deployment and locational advantage: a case study of Taiwan’, NBER Working Paper, No. 10169, Cambridge, MA: National Bureau of Economic Research.
Liu, X. and T. Buck (2007), ‘Innovation performance and channels for international technology spillovers: Evidence from Chinese high-tech industries’, Research Policy, 36(3), pp. 355–366.
Lundvall, B.-Å. (2007), ‘National Innovation Systems - Analytical Concept and Development Tool’, Industry and Innovation, 14(1), pp. 95–119.
Mahmood, I.P. and W. Mitchell (2004), ‘Two Faces: Effects of Business Groups on Innovation in Emerging Economies’, Management Science, 50(10), pp.1348–1365.
Malerba, F. (2002), ‘Sectoral systems of innovation and production’, Research Policy, 31 (2), 247–264.
Malerba, F. (2005), ‘Sectoral systems: How and why innovation differ across sectors’ in Fagerberg, J., D. Mowery, R.R. Nelson (eds.) The Oxford Handbook of Innovation, pp. 380–407, Oxford: Oxford University Press.
Malerba, F. and L. Orsenigo (1996), ‘Schumpeterian patterns of innovation are technology-specific’, Research Policy, 25, 451–478.
Malerba, F. and L. Orsenigo, (1995), ‘Schumpeterian patterns of innovation’, Cambridge Journal of Economics, 19, 47–65.
Mariani, M. (2002), ‘Next to Production or to Technological Clusters? The Economics and Management of R&D Location’, Journal of Management and Governance, 6(2), pp. 131–152.
Mathieu, A. and B. van Pottelsberghe de la Potterie (2008), A note on the drivers of R&D intensity, CEPR Discussion Paper, No. DP6684, London: Centre for Economic and Policy Research.
Melitz, M. (2003), ‘The Impact of Trade on Intra-Industry Reallocations and Aggregate Industry Productivity’, Econometrica, 71(6), pp. 1695–1725.
Narayanan, K. and Bhat, S. (2009), ‘Technology sourcing and its determinants: A study of Basic Chemical industry in India’, Technovation, 29(8), pp. 562–573.
Narayanan, K. and R. Thomas (2010), ‘R&D and Internationalisation in the Pharmaceutical Sector in India’, in Siddharthan, N.S. and K. Narayanan (eds.) Indian and Chinese Enterprises: Global Trade, Technology and Investment Regimes, pp. 211–238, New Delhi: Routledge.
Nelson, R.R. (1987), ‘Innovation and Economic Development Theoretical Retrospect and Prospect’, in J.M. Katz (ed.). Technology Generation in Latin American Manufacturing Industries, pp. 78–93, Hong Kong: The Macmillan Press.
OECD (2003), Tax Incentives for Research and Development: Trends and Issues, Paris: Organisation for Economic Co-operation and Development.
ÓhUallacháin, B. and T.F. Leslie (2007), ‘Rethinking the Regional Knowledge Production Function’, Journal of Economic Geography, 7(6), 737–752.
Pavitt, K. (1984), ‘Sectoral Patterns of Innovation: Towards a Taxonomy and a Theory’, Research Policy, 13(6), pp. 343–373.
Pendall, R., K.A. Foster and M. Cowell (2010), ‘Resilience and regions: building understanding of the metaphor’, Cambridge Journal of Regions, Economy and Society, 3(1), pp.71–84.
Porter, M.E. (1996), ‘What is a strategy’, Harvard Business Review, 74(6), pp. 61–78.
Porter, M.E. (2000), ‘Location, competition, and economic development: local clusters in a global economy’, Economic Development Quarterly, 14(1), pp. 15–34.
Porter, M.E., Monitor Group, ontheFRONTIER and Council on Competitiveness (2001), Clusters of Innovation: Regional Foundations of U.S. Competitiveness, Washington, DC: Council on Competitiveness.
Powell, J.L. (1986), ‘Censored Regression Quantiles’, Journal of Econometrics, 32, pp. 143–155.
Pradhan, J. P. (2002), ‘Liberalization, Firm Size and R&D Performance: A Firm Level Study of Indian Pharmaceutical Industry’, Journal of Indian School of Political Economy, 14(4), pp. 647–666.
Pradhan, J.P. (2008), Indian Multinationals in the World Economy: Implications for Development, New Delhi: Bookwell.
Pradhan, J.P. (2010), ‘R&D Strategy of Small and Medium Enterprises in India’, EERI Research Paper Series, No 14/2010, Brussels: Economics and Econometrics Research Institute.
Pradhan, J.P. and N. Singh (2009), ‘Outward FDI and Knowledge Flows: A Study of the Indian Automotive Sector’, International Journal of Institutions and Economies, 1(1), pp. 156–187.
Prahalad, C.K. and G. Hamel (1990), ‘The Core Competence of the Corporation’, Harvard Business Review, 68(3), pp. 79–91.
Raider, H.J. (1998), ‘Market Structure and Innovation’, Social Science Research, 27(1), pp. 1–21.
Ramstetter, E.D. and C-H. Yang (2009), ‘The Influence of Industry-Level Concentration, Exporting and Foreign Ownership on Plant-Level Innovation: Evidence from Taiwanese Electronics’, ICSEAD Working Paper, No. 2009-12, Kitakyushu: The International Centre for the Study of East Asian Development.
Rasiah, R. (2007), ‘Export Orientation and Technological Intensities in Auto Parts Firms in East and Southeast Asia: Does Ownership Matter?’, Asian Economic Papers, 6(2), pp. 55–76.
Rasiah, R. and V.G.R. Chandran (2009), ‘University-Industry Collaboration in the Automotive, Biotechnology, and Electronics Firms in Malaysia’, Seoul Journal of Economics, 22(4), 529–550.
Redding, S. (1996), ‘The low-skill, low-quality trap: strategic complementarities between human capital and R&D’, Economic Journal, 106(435), pp. 458–470.
Reddy, P. (1997), ‘New trends in globalization of corporate R&D and implications for innovation capability in host countries: a survey from India’, World Development, 25(11), pp. 1821–1837.
Sahoo, S. and K.K. Saxena (1999), ‘Infrastructure and economic development: some empirical evidence’, The Indian Economic Journal, 47(2), pp. 54–66.
Salomon, R.M. and J.M. Shaver (2005), ‘Learning by Exporting: New Insights from Examining Firm Innovation’, Journal of Economics and Management Strategy, 4(2), 431–60.
Schmillen, A. and J. Möller (2009), ‘Determinants of Lifetime Unemployment - A Micro Data Analysis with Censored Quantile Regressions’, Working Papers, No. 275, October 2009, Osteuropa-Institut Regensburg, University of Regensburg.
Schumpeter, J.A. (1934), The Theory of Economic Development: An Inquiry into Profits, Capital, Credit, Interest and the Business Cycle, Cambridge Mass.: Harvard University Press.
Schumpeter, J.A. (1942), Capitalism, Socialism and Democracy, New York: Harper and Row.
Shimizutani, S. and Y. Todo (2008), ‘What determines overseas R&D activities? The case of Japanese multinational firms’, Research Policy, 37(3), pp. 530–544.
Siddharthan, N.S. (1988) ‘In-house R&D, imported technology, and firm size: Lessons from Indian experience’, The Developing Economies, 26, pp. 212−221.
Siddharthan, N.S. (2000), ‘Technology transfer, WTO and emerging issues’, IEG Working Paper, No. E/207/2000, New Delhi: Institute of Economic Growth.
Siddharthan, N.S. (2009), ‘Determinants of R&D: Lessons from Literature’, in Hashim, S.R., K.S.C. Rao, K.V.K. Ranganathan, and M.R. Murthy (eds.), Indian Industrial Development and Globalisation: Essays in Honour of Professor S.K. Goyal, pp. 383–408, New Delhi: Academic Foundation.
Siddharthan, N.S., and R.N. Agarwal (1992), ‘Determinants of R&D Decisions: A Cross-Section Study of Indian Private Corporate Firms’, Economic Innovation and New Technology, 2(2), pp.103–110.
Simmie, J. And R. Martin (2010), ‘The economic resilience of regions: towards an evolutionary approach’, Cambridge Journal of Regions, Economy and Society, 3(1), pp. 27–43.
Smith, K. (1997), ‘Economic infrastructures and innovation systems’, in C. Edquist (ed.) Innovation Systems: Institutions, Organisations and Dynamics, pp. 86–106, London: Routledge.
Storper, M. (1997), The Regional World: Territorial Development in a Global Economy, New York: Guilford Press.
Subodh, K. (2002), ‘Market Concentration, Firm Size and Innovative Activity: A Firm-level Economic Analysis of Selected Indian Industries under Economic Liberalization’, WIDER Discussion Paper, No. 2002/108, Helsinki: UNU World Institute for Development Economics Research.
Teitel, S. (1987), ‘Towards an Understanding of Technical Change in Semi-Industrialized Countries’ In J.M. Katz (ed.), Technology Generation in Latin American Manufacturing Industries, pp. 94–115, Hong Kong: The Macmillan Press.
Tobin, J. (1958), ‘Estimation of relationships for limited dependent variables’, Econometrica, 26(1), pp. 24–36.
Tsai, K-H. and J-C. Wang (2008), ‘External technology acquisition and firm performance: A longitudinal study’, Journal of Business Venturing, 23(1), pp. 91–112.
Tybout, J.R. (2003), ‘Plant and Firm Level Evidence on the New Trade Theories’, in E. K. Choi and J. Harrigan (eds.), Handbook of International Trade, pp. 388–415, Oxford: Basil-Blackwell.
UNCTAD (1999), World Investment Report 1999: Foreign Direct Investment and the Challenge of Development, New York and Geneva: United Nations.
UNCTAD (2001), World Investment Report 2001: Promoting Linkages, New York and Geneva: United Nations.
UNCTAD (2005), World Investment Report: Transnational Corporations and the Internationalization of R&D, Geneva and New York: United Nations.
Usai, S. (2008), ‘The geography of inventive activities in OECD regions’, STI Working Paper, No. 2008/3, Paris: Organisation for Economic Co-operation and Development.
Vernon, R. (1966), ‘International investment and international trade in the product life cycle’, Quarterly Journal of Economics, 80(2), pp.190–207.
Wagner, J. (2007), ‘Exports and Productivity: A Survey of the Evidence from Firm-level Data’, The World Economy, 30(1), pp. 60–82.
Wilhelm, M. O. (2008), ‘Practical Considerations for Choosing Between Tobit and SCLS or CLAD Estimators for Censored Regression Models with an Application to Charitable Giving’, Oxford Bulletin of Economics and Statistics, 70(4), pp. 559–582.
Zeng, J. (1997), ‘Physical and human capital accumulation, R&D and economic growth’, Southern Economic Journal, 63(4), 1023–1038.