Rhoades, B. E. and c{S}oltuz, c{S}tefan M. (2004) “The equivalence of Mann iteration and Ishikawa iteration for a Lipschitzian $ \psi $- uniformly pseudocontractive and $ \psi $- uniformly accretive maps”, Tamkang Journal of Mathematics, 35(3), pp. 235–246. doi: 10.5556/j.tkjm.35.2004.204.