MOKHONKO, A. Z.; MOKHONKO, A. A. Deficiency Values for the Solutions of Differential Equations with Branching Point. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 66, n. 7, p. 939–957, 2014. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2190. Acesso em: 5 dec. 2025.