1. Almond, B. (1991) Rights. In A Companion to Ethics, ed. P. Singer. Blackwell, Oxford
2. Arrow, K. J. (1963) Social Choice and Individual Values. Yale University Press, New Haven
3. Avineri, S. and de Shalit, A. (1992) Introduction. In Communitarianism and Individualism, eds. S. Avineri and A. de-Shalit. Oxford University Press, Oxford
4. On the concept of social welfare;Bergson;Quarterly Journal of Economics,1954
5. Oregon's experiment;Brannigan;Health Care Analysis,1993