BANTSUR, N. R.; TROFIMCHUK, E. P. On the existence and stability of periodic and almost periodic solutions of quasilinear equations with maxima. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 50, n. 6, p. 747–754, 1998. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4884. Acesso em: 5 dec. 2025.