Hojo, M., and W. Takahashi. 2014. “NONLINEAR ERGODIC THEOREMS FOR WIDELY MORE GENERALIZED HYBRID MAPPINGS IN HILBERT SPACES”. Journal of Nonlinear Analysis and Optimization: Theory & Applications (JNAO) 5 (1):57-66. https://ph03.tci-thaijo.org/index.php/jnao/article/view/2730.