RECKE, L. Forced frequency locking for differential equations with distributional forcings. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 70, n. 1, p. 115–129, 2018. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/1545. Acesso em: 5 dec. 2025.