LIU, Y. Picard Boundary Value Problems for Second Order Nonlinear Functional Integro-Differential Equations. Sarajevo Journal of Mathematics, [S. l.], v. 5, n. 2, p. 191–210, 2024. DOI: 10.5644/SJM.05.2.05. Disponível em: https://sjm.anubih.ba/index.php/sjm/article/view/339. Acesso em: 15 oct. 2024.