1. On variations of the subset sum problem;Alfonsin;Discrete Appl. Math.,1998
2. Weighted voting doesn't work;Banzhaf;Rutgers Law Rev.,1965
3. Power indices in politics;Brams,1983
4. Computers and Intractability: A Guide to the Theory of NP-Completeness;Garay,1979
5. Reducibility among combinatorial problems;Karp,1972