1. On the composition and decomposition of clutters;Billera;J. Comb. Theory Ser. B.,1980
2. Mathematical properties of the Banzhaf power index;Dubey;Math. Operations Res.,1979
3. Value theory without efficiency;Dubey;Math. Operations Res.,1981
4. Simple solutions;Gurk,1959
5. Introduction to Group Theory;Ledermann,1973