ŠIMĆ, M.; VOLENEC, V.; BRKIĆ, J. B. Curvature of the Focal Conic in the Isotropic Plane. Sarajevo Journal of Mathematics, [S. l.], v. 6, n. 1, p. 117–123, 2024. DOI: 10.5644/SJM.06.1.10. Disponível em: https://sjm.anubih.ba/index.php/sjm/article/view/331. Acesso em: 15 oct. 2024.