BERZHANOV, A. B.; KURMANGALIEV, E. K. Solution of a countable system of quasilinear partial differential equations multiperiodic in a part of variables. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 61, n. 2, p. 280–288, 2009. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3019. Acesso em: 13 feb. 2026.