A construction of partial asymptotic solutions of linear degenerate differential systems with delay in the argument. Neliniini Kolyvannya, [S. l.], v. 13, n. 3, p. 400–419, 2010. Disponível em: https://nosc.imath.kiev.ua/index.php/nosc/article/view/573. Acesso em: 12 apr. 2026.