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Carrasco, Luis Roman and Baker, R and MacLeod, A and Knight, J. D. and Mumford, J. D. (2009): Optimal and robust control of invasive alien species spreading in homogeneous landscapes. Published in: Journal of the Royal Society Interface , Vol. 7, No. 44 (March 2010): pp. 529-540.
Ciobotaru, Virginia and Tapurica, Oana-Catalina and Tache, Florin (2008): Avantajele implementarii unui sistem de management al mediului la nivelul clusterelor industriale in economia bazata pe cunoastere. Published in: Investitiile si Noua Economie - Lucrarile celui de-al Optulea Simpozion International "Investitiile si Relansarea Economica" (5. July 2008): pp. 281-289.
García-León, David (2015): Weather and Income: Lessons from the main European regions.
Halkos, George (2001): Implementation of environmental management systems standards: important factors in corporate decision-making. Published in: Journal of Environmental Assessment Policy and Management , Vol. 4, No. 3 (2002): pp. 311-328.
Halkos, George E (2001): Determinants of environmental management systems standards implementation: evidence from Greek industry. Published in: Business Strategy and The Environment , Vol. 11, (2002): pp. 360-375.
McManus, Walter (2006): Can proactive fuel economy strategies help automakers mitigate fuel price risk?
Meena, M.S.. and Singh, K.M. (2012): Information and Communication Technologies for Sustainable Natural Resource Management.
Mihai, Florin-Constantin and Lamasanu, Andreea (2013): Spatial analysis of dumpsites volumes from rural territory Case study: Neamt County, Romania. Published in: Forum Geografic. Geographical studies and environment protection research , Vol. 12, No. 1 (2013): pp. 59-66.
Necula, Diana (2014): Analysis economic indicators main crops in the South-West Oltenia. Published in: Agrarian Economy and Rural Development - Realities and Perspectives for Romania , Vol. 5, No. ISSN 2285–6803 ISSN-L 2285–6803 (20. November 2014): pp. 327-331.