Afrouzi, G. A., Yousefi, S. and Talarposhti, R. (2011) “STUDY ON EXISTENCE THEORY FOR INTEGRAL EQUATIONS OF MIXED TYPE”, Journal of Nonlinear Analysis and Optimization: Theory & Applications (JNAO), 2(2), pp. 363–366. available at: https://ph03.tci-thaijo.org/index.php/jnao/article/view/2644 (accessed: 2 September 2026).