MUSIELAK, M. Covering a reduced spherical body by a disk. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 72, n. 10, p. 1400–1409, 2020. DOI: 10.37863/umzh.v72i10.6029. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/6029. Acesso em: 5 dec. 2025.