KHOMA, N. H.; KHOMA, L. G. Generalized periodic solutions of quasilinear equations. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 48, n. 3, p. 406–411, 1996. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5337. Acesso em: 14 apr. 2025.