1. Fan K. Sur un théorèmme minimax, C R Acad Sci Paris, 1964, 259: 3925–3928.
2. Joo I, Kassay G. Convexity, minimax theorems and their applications, Ann Univ Sci Budapest Sect Math, 1995, 38: 71–93.
3. Cheng Caozong, Lin Bor-Luh. Nonlinear two-function minimax theorems, In: B Ricceri, S Simons, eds, Minimax Theory and Applications. Nonconvex Optim Appl, Dordrecht: Kluwer Academic Publishers, 1998, 26: 1–20.
4. Simons S. Minimax and variational inequalities, are they fixed piont or Hahn-Banach type? In: O Moeschlin, D Pall aschke, eds, Game Theory and Mathematical Economics, North-Holland Publishing Company, 1981, 379–388.
5. Lin Bor-Luh, Quan Xiu-Chi. A two-function symmetric nonlinear minimax theorem, Sonderdruck aus Arch Math (Birkhäuse Verlag Basel), 1991, 57: 75–79.