BALAKAN, G.; DEMIREL, O. The Formulas of Möbius-Bretschneider and Möbius-Cagnoli in the Poincaré Disc Model of Hyperbolic Geometry. Al-Mustansiriyah Journal of Science, [S. l.], v. 32, n. 1, p. 31–38, 2021. DOI: 10.23851/mjs.v32i1.932. Disponível em: https://mjs.uomustansiriyah.edu.iq/index.php/MJS/article/view/932. Acesso em: 3 oct. 2022.