1. Arrow, K. J.: 1948, The possibility of a Universal Social Welfare Function, Project RANO RAD(L)-289 26 October 1948, Santa Monica, California (hectographed).
2. Arrow, K. J.: 1978, Social Choice and Individual Values, Yale University Press (9th edition).
3. Loomes, G. and Sugden, R.: 1984, ?The importance of what might have been?, in: O. Hagen and F. Wenstop (eds.), Progress in Utility and Risk Theory, D. Reidel Publishing Company, Dordrecht.
4. Moon, J. W.: 1968, Topics on Tournaments, Holt, Rinehart and Winston, New York.
5. Roubens, M. and Vincke, Ph.: 1985, Preference Modelling, Springer-Verlag, Lecture Notes in Economics and Mathematical Systems Vol. 250.