MIKHALCHUK, V. G. On the existence of single-valued quasiconformal mappings on closed Riemannian surfaces. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 18, n. 4, 1966. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8321. Acesso em: 6 dec. 2025.