DOBRYNSKII, V. A. On synchronization of symmetrically perturbed systems with quadratic nonlinearity. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 51, n. 11, p. 1569–1573, 1999. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4759. Acesso em: 11 apr. 2025.