Alinejad, Z., and K. Mirmostafaee. “GENERALIZED CONTRACTIVE MAPPINGS IN b-METRIC SPACES”. Journal of Nonlinear Analysis and Optimization: Theory & Applications (JNAO) 9, no. 1 (March 31, 2018): 39–48. accessed September 2, 2026. https://ph03.tci-thaijo.org/index.php/jnao/article/view/2869.