GOR'KAVYI, V. A.; DISKANT, V. I.; MILKA, A. D. International Conference on Geometry "in the Large". Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 52, n. 7, p. 1007–1008, 2000. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4503. Acesso em: 27 apr. 2025.