BLAŽEK, J.; LEISCHNER, P. How does the Apollonius circle relate to the ellipse?. MATHEMATICS–PHYSICS–INFORMATICS, [S. l.], v. 28, n. 2, p. 81–91, 2019. Disponível em: https://mfi.upol.cz/index.php/mfi/article/view/445. Acesso em: 15 nov. 2026.