G. HORVÁTH, Ákos. Skew lines in hyperbolic space. Periodica Polytechnica Mechanical Engineering, [S. l.], v. 47, n. 1, p. 25–30, 2003. Disponível em: https://pp5.omikk.bme.hu/me/article/view/1373. Acesso em: 27 2025.