ZVERKOVA, T. S.; PLOTNIKOV, V. A. Method of partial averaging in the systems of standard form with discontinuous right-hand sides. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 45, n. 1, p. 140–142, 1993. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5794. Acesso em: 5 dec. 2025.