On motion stability, with respect to two measures, of a system with an after-effect and impulsive perturbations. Neliniini Kolyvannya, [S. l.], v. 16, n. 4, p. 502–510, 2013. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/716. Acesso em: 21 jan. 2026.