1. Brams, Steven J., Paradoxes in Politics, Free Press, New York, 1976.
2. Dacey, R., Simmons, R., Curry, D., and Kennelly, J. ?A Cognitivist Solution to Newcomb's Problem?, American Philosophical Quarterly 14 (1977), 79?84.
3. Downs, Anthony, An Economic Theory of Democracy, Harper & Row, Publishers, Inc., New York, New York, 1957.
4. Gibbard, Allan, ?Manipulation of Schemes That Mix Voting With Chance?, Econometrica 45 (1977), 665?681.
5. Goguen, J. A., ?The Logic of Inexact Concepts?, Synthese 19 (1969), 352?373.