B. E. Rhoades and c{S}tefan M. c{S}oltuz, “The equivalence of Mann iteration and Ishikawa iteration for a Lipschitzian $ \psi $- uniformly pseudocontractive and $ \psi $- uniformly accretive maps”, Tamkang J. Math., vol. 35, no. 3, pp. 235–246, Sep. 2004.