DOVLETOV, D.M. Nonlocal boundary value problem with Poisson’s operator on a rectangle and its difference interpretation. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 99, n. 3, p. 38–54, 2020. DOI: 10.31489/2020m3/38-54. Disponível em: https://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/381. Acesso em: 9 jul. 2025.