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 2021, 32 (1), 31-38. https://doi.org/10.23851/mjs.v32i1.932.