VLASENKO, L. A. Forced oscillations of an infinite-dimensional oscillator under impulsive perturbations. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 60, n. 2, p. 155–166, 2008. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3145. Acesso em: 6 dec. 2025.