[1] O. Bondareva: Těorija jadra n-lic. Vestnik Leningrad. Univ. Mat. 17 (1962), 13, 141-142. MR 0149966

[2] M. Mareš: General coalition games. Kybernetika 14 (1978), 4, 245-260. MR 0514278

[3] M. Mareš: A few remarks on vector optimization from the coalition game theoretical point-of-view. Kybernetika 19 (1983), 4, 277-298. MR 0723079

[4] M. Mareš: Additivity in general coalition games. Kybernetika 14 (1978), 5, 350-368. MR 0512003

[5] J. Rosenmüller: The Theory of Games and Markets. North-Holland, Amsterdam 1982. MR 0632834

[6] H. E. Scarf: The core of an TV person game. Econometrics 35 (1967), 1, 50-69. MR 0234735

[7] L. S. Shapley: On Balanced Sets and Cores. RAND Corporation Memorandum RM-4601-PR, June 1965.

[8] L. S. Shapley: Cores of Convex Games. RAND Corporation Memorandum RM-4571-PR, 1965.

[9] Sh. Weber: On $\epsilon$-cores of balanced games. Internat. J. Game Theory 8 (1979), 4, 141-250. MR 0558629

[10] A. Otáhal: On the core of an incomplete n-person game. Kybernetika 15(1979), 2, 149-255. MR 0542060