[1] HALPERN B.Fixed Points of Nonexpanding Maps [J].Bull. Amer. Math.Soc.,1967,73:591-597.[2] REICH S.Strong Convergence Theorems for Resolvents of Accretive Operators in Banach Spaces [J].J. Math. Anal. Appl.,1980,75:287-292.[3] SUZUKI T.A Sufficient and Necessary Condition for Halpern-Type Strong Convergence to Fixed Point of Nonexpansive Mappings [J].Proceedings of Amer. Math. Soc.,2007,135(1):99-106.[4] WITTMANN R.Approximation of Fixed Points of Nonexpansive Mappings [J].Arch. Math.,1992,58:486-491.[5] XU H K.Iterative Algorithms for Nonlinear Operators [J].J. London Math. Soc.,2002,66:240-256.[6] GOEBEL K,REICH S.Uniform Convexity,Hyperbolic Geometric and Nonexpansive Mappings [M].New York-Basel:Pure Appl. Math.,Marcel Dekker,Inc.,1984.[7] BRIDSON M,HAEFLIGER A.Metric Spaces of Non-Positive Curvature [M].Berlin,Heidelberg,New York:Springer-Verlag,1999. |