MARDANOV, M.J.; SHARIFOV, Y.A.; ISMAYILOVA, K.E. Existence and uniqueness of solutions for the system of integro-differential equations with three-point and nonlinear integral boundary conditions. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 99, n. 3, p. 26–37, 2020. DOI: 10.31489/2020m3/26-37. Disponível em: https://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/378. Acesso em: 9 jul. 2025.