R. RAJKUMAR; M. GAYATHRI; T. ANITHA. Enumeration of Homomorphisms From Modular Group into Some Finite Groups. International Journal of Mathematics And its Applications, [S. l.], v. 3, n. 3 - B, p. 15–19, 2015. Disponível em: https://ijmaa.in/index.php/ijmaa/article/view/452. Acesso em: 3 jul. 2024.