IGNAT'EV, A. O. On equiasymptotic stability of solutions of doubly-periodic impulsive systems. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 60, n. 10, p. 1317–1325, 2008. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3246. Acesso em: 14 apr. 2025.