BAKHTIN, A. K. A problem of extreme decomposition of the complex plane with free poles. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 71, n. 10, p. 1299–1320, 2019. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/1516. Acesso em: 14 apr. 2025.