VUKMIROVIĆ, Srdjan; ŠUKILOVIĆ, Tijana. Geodesic completeness of the left-invariant metrics on ${{\mathbb{R}} H^n} $. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 72, n. 5, p. 611–619, 2020. DOI: 10.37863/umzh.v72i5.645. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/645. Acesso em: 7 apr. 2025.