Kolar-Begović, Zdenka, Ružica Kolar-Šuper, and Vladimir Volenec. 2015. “Equicevian Points and Equiangular Lines of a Triangle in an Isotropic Plane”. Sarajevo Journal of Mathematics 11 (1):101-7. https://doi.org/10.5644/SJM.11.1.08.