1. Fan, K.: Sur un théorème minimax. C. R. Acad. Sci. Paris, 259, 3925–3928 (1964)
2. Simons, S.: Minimax and variational inequalities, are they fixed point or Hahn-Banach type? Game theory and mathematical economics, O. Moeschlin and D. Pallaschke, eds., North Holland, Amsterdam-New York-Oxford, 1981, 379–388
3. Lin, B.-L., Quan, X.-C.: A two functions symmetric nonlinear minimax theorem. Arch. Math., 57, 75–79 (1991)
4. Forgó, F., Joó, I.: A general nontopological two-function minimax theorem. Arch. Math. (Basel), 71, 376–383 (1998)
5. Irle, I.: A General minimax theorem. Zeitschrift für Operations Research., 29, 229–247 (1985)