1. Essential and nonessential fixed points;Fort;Amer. J. Math.,1950
2. On essential components of the set of fixed points;Kinoshita;Osaka J. Math.,1952
3. Essential equilibrium points of n-person noncooperative games;Wu;Sci. Sin.,1962
4. Essential component of the set of fixed points of the multivalued mappings and its application to the theory of games;Jiang;Sci. Sin.,1963
5. On the strategic stability of equilibria;Kohlberg;Econometrica,1986