MARTYNYUK, A. A.; MARTYNYUK-CHERNIENKO, Yu. A. Existence, uniqueness, and estimation of solutions for a set of equations of perturbed motion. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 65, n. 2, p. 273–295, 2013. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2418. Acesso em: 14 apr. 2025.