Imdad, M., Soliman, A. H. and Barakat, M. A. (2013) “ON GENERALIZED LIPSCHITZIAN MAPPING AND EXPANSIVE LIPSCHITZ CONSTANT”, Journal of Nonlinear Analysis and Optimization: Theory & Applications (JNAO), 5(1), pp. 11–25. available at: https://ph03.tci-thaijo.org/index.php/jnao/article/view/2726 (accessed: 2 September 2026).