New results on periodic solutions to impulsive non-autonomous evolution equations with time delays. Neliniini Kolyvannya, [S. l.], v. 17, n. 4, p. 476–488, 2014. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/758. Acesso em: 21 jan. 2026.