1. On the weak*-fixed point property;Khamsi,1989
2. Nonexpansive mappings and fixed points in Banach spaces;Belluce;Illinois J. Math.,1967
3. Characterizations of normal structure;Lim,1974
4. Fixed point theorems without convexity;Penot;Bull. Soc. Math. France,1979
5. Nonexpansive mappings and hyperconvex space;Baillon,1988