Dinarvand, M. “THE GENERALIZED VON NEUMMAN-JORDAN CONSTANT AND FIXED POINTS OF MULTIVALUED NONEXPANSIVE MAPPINGS IN BANACH SPACES”. Journal of Nonlinear Analysis and Optimization: Theory & Applications (JNAO) 7, no. 2 (February 1, 2018): 79–90. accessed September 2, 2026. https://ph03.tci-thaijo.org/index.php/jnao/article/view/2834.