PACHPATTE, B. G. On a Nonlinear Volterra-Fredholm Integral Equation. Sarajevo Journal of Mathematics, [S. l.], v. 4, n. 1, p. 61–71, 2024. DOI: 10.5644/SJM.04.1.06. Disponível em: https://sjm.anubih.ba/index.php/sjm/article/view/377. Acesso em: 16 oct. 2024.