LAVRENYUK, S. P.; OLISKEVYCH, M. O. Galerkin Method for First-Order Hyperbolic Systems with Two Independent Variables. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 54, n. 10, p. 1356–1371, 2002. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4174. Acesso em: 7 apr. 2025.