Sergio Nisticò he is Associate Professor of Economics at the Faculty of Economics of the University of Cassino, where he teaches Microeconomics, History of Economic Thought and Social Security Economics. In 1995 and 1996 he has been elected Member of the Commission for the Italian Transportation Plan at the Ministry of Transports. Since 2001 He is the author of several articles on Price Theory, Temporary Equilibrium Models and Pension Systems. He is also coauthor, with Sandro Gronchi, of a report on “Fair and sustainable pay-as-you-go pension systems: theoretical models and practical realizations”, commissioned in 2002 by the Italian National Council for Economy and Labour (CNEL).