Some Models of the Finite Hyperbolic Geometry and the Finite Hyperbolic Plane. Al-Nahrain Journal of Science, [S. l.], v. 25, n. 4, p. 59–62, 2022. Disponível em: https://anjs.edu.iq/index.php/anjs/article/view/2507. Acesso em: 15 apr. 2025.