1 Cohn, E., "The economic returns to lifelong learning in OECD countries" 6 : 253-307, 1998
2 Hart, O., "The Theory of Contracts, In Advances in Economic Theory: Fifth World Congress" Cambridge University Press 71-155, 1989
3 Psacharopoulos, G., "Returns to Investment in Education: A Global Update" The World Bank 1993
4 Mankiw, G. N., "Principles of Economics" Harcourt College Publishers 2001
5 Dutta, P. K., "Moral Hazard, In Handbook of Game Theory With Economic Applications" Elsevier Science B. V. 869-903, 1994
6 Brewer, Dominic J., "In Pursuit of Prestige: Strategy and Competition in U.S. Higher Education" Transaction Publisher 2002
7 Bolton, Patrick, "Contract Theory" The MIT Press 2005
1 Cohn, E., "The economic returns to lifelong learning in OECD countries" 6 : 253-307, 1998
2 Hart, O., "The Theory of Contracts, In Advances in Economic Theory: Fifth World Congress" Cambridge University Press 71-155, 1989
3 Psacharopoulos, G., "Returns to Investment in Education: A Global Update" The World Bank 1993
4 Mankiw, G. N., "Principles of Economics" Harcourt College Publishers 2001
5 Dutta, P. K., "Moral Hazard, In Handbook of Game Theory With Economic Applications" Elsevier Science B. V. 869-903, 1994
6 Brewer, Dominic J., "In Pursuit of Prestige: Strategy and Competition in U.S. Higher Education" Transaction Publisher 2002
7 Bolton, Patrick, "Contract Theory" The MIT Press 2005