KOLESOV, A. Yu.; ROZOV, N. Kh. New methods for the investigation of periodic solutions in ring systems of unidirectionally coupled oscillators. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 65, n. 1, p. 82–102, 2013. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2406. Acesso em: 5 dec. 2025.