SAMOILENKO , A. M.; BOICHUK , A. A. Linear Neterov’s boundary problems for differential systems with pulse action. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 44, n. 4, p. 564–568, 1992. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/7902. Acesso em: 5 dec. 2025.