Van Vliet, Olaf and Nijboer, Henk (2012): Flexicurity in the European Union: flexibility for outsiders, security for insiders. Unpublished.
Van Vliet, Olaf and Kaeding, Michael (2007): Globalisation, European Integration and Social Protection – Patterns of Change or Continuity? Unpublished.
Caminada, Koen; Goudswaard, Kees and Van Vliet, Olaf (2008): Patterns of welfare state indicators in the EU: Is there convergence? Published in: Department of Economics Research Memorandum No. 2008.05 (2008): pp. 1-22.
Van Vliet, Olaf; Been, Jim; Caminada, Koen and Goudswaard, Kees (2011): Pension reform and income inequality among the elderly in 15 European countries. Unpublished.
