REZOUNENKO, A. On singular limit dynamics for a class of retarded nonlinear partial differential equations. Математическая физика, анализ, геометрия, Харків, Україна, v. 4, n. 1-2, p. 193–211, 1997. Disponível em: https://mag.ilt.kharkiv.ua/index.php/mag/article/view/m04-0193e. Acesso em: 21 лис. 2024.