Cholamjiak, P., and S. Suantai. “WEAK CONVERGENCE FOR A SEQUENCE OF NONEXPANSIVE MAPPINGS IN BANACH SPACES WITH GAUGE FUNCTIONS”. Journal of Nonlinear Analysis and Optimization: Theory & Applications, vol. 2, no. 1, Dec. 2011, pp. 249-54, http://www.math.sci.nu.ac.th/ojs302/index.php/jnao/article/view/39.