ILOLOV, M. On Galerkin’s method for evolutionary equations with pulse influence. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 45, n. 4, p. 481–486, 1993. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5835. Acesso em: 5 dec. 2025.