GOPALAN, M. A.; SUMATHI, G.; VIDHYALAKSHMI, S. On Special Families of Hyperbola ,. The International Journal of Science & Technoledge, [S. l.], v. 2, n. 3, 2014. Disponível em: http://internationaljournalcorner.com/index.php/theijst/article/view/138563. Acesso em: 7 jul. 2024.