ZABOLOTNII , Ya. V. The problem of V. N. Dubinin for symmetric multiconnected domains. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 72, n. 11, p. 1502–1509, 2020. DOI: 10.37863/umzh.v72i11.6064. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/6064. Acesso em: 11 apr. 2025.