PACHPATTE, B. G. On a Mixed Sum-Difference Equation of Volterra-Fredholm Type. Sarajevo Journal of Mathematics, [S. l.], v. 5, n. 1, p. 55–62, 2024. DOI: 10.5644/SJM.05.1.05. Disponível em: https://sjm.anubih.ba/index.php/sjm/article/view/351. Acesso em: 15 oct. 2024.