1. Blum, E., Oettli, W.: From optimization and variational inequalities to equilibrium problems. Math. Stud. 10, 123–145 (1994)
2. Nonconvex Optimization and Its Application;P. Daniele,2003
3. Moudafi, A.: Second order differential proximal methods for equilibrium problems. J. Inequal. Pure Appl. Math. 4(1), Article ID 18 (2003)
4. Hartman, P., Stampacchia, G.: On some non-linear elliptic differential-functional equation. Acta Math. 115, 271–310 (1966)
5. Korpelevich, G.M.: The extragradient method for finding saddle points and other problems. Matecon 12, 747–756 (1976)