On minimal (maximal) common fixed points of a commuting family of decreasing (increasing) maps, Proceedings of the Conference on Differential & Difference Equations and Applications, 2006, pp. 683-684.
On the largest common fixed point of a commuting family of isotone maps Discrete and Continuous Dynamical Systems, Series A (2005),suppl., pp. 621-623. On fixed points of isometries on weakly compact convex sets, Journal of Mathematical Analysis and Applications, vol. 282,2003, pp 1-7.On characterizations of Meir-Keeler contractive maps, Nonlinear Analysis, vol. 46/1,2001, pp=20 113-120.
On moduli of k-convexity. PDF
On characterizations of Meir-Keeler contractive maps. PDF
A fixed point theorem for weakly inward multivalued contractions. PDF,Postscript
On weak compactness and countable weak compactness in fixed point theory. PDF
On some L^p inequalities in best approximation theory. PDF
On fixed point stability for set-valued contractive mappings with applications to generalized differential equations. PDF
A note on the Clarkson inequality and the Hanner inequality.PDF
Fixed point theorems for uniformly lipschitzian mappings in L^p spaces. PDF (see Addendum also)
Addendum to "Fixed point theorems for uniformly lipschitzian mappings in L^p spaces".PDF
On common fixed point sets of commutative mappings. PDF
On the normal structure coefficient and the bounded sequence coefficient. PDF,Postscript
The center of a convex set. PDF,Postscript
Fixed point theorems for mappings of nonexpansive type. PDF, Postscript
Remarks on some fixed point theorems. PDF,Postscript
Characterizations of normal structure. PDF,Postscript
A fixed point theorem for families of nonexpansive mappings.PDF
Fixed point theorems for asymptotically nonexpansive mappings.PDF
A fixed point theorem for multivalued nonexpansive mappings in a uniformly convex Banach space (1974)PDF