SAPAGOVAS, M. P. On the solution of quasilinear elliptic equations by finite-difference method. Lithuanian Mathematical Journal, [S. l.], v. 5, n. 4, p. 637–644, 1965. DOI: 10.15388/LMJ.1965.19624. Disponível em: https://www.zurnalai.vu.lt/LMJ/article/view/19624. Acesso em: 8 jun. 2025.