We study the convergence of the Ishikawa iteration methods to fixed points for the result of Smarzewski (1991). Our theorems also improve recent theorems due to Sharma and Sahu (1996).
LIU, G., LEI, D., & LI, S. (2000). APPROXIMATING FIXED POINTS OF NONEXPANSIVE MAPPINGS. International Journal of Mathematics and Mathematical Sciences, 2000(), a173-177-125. https://doi.org/10.1155/S0161171200003252