ALAM, M. S. On Ramanujan’s modular equations and Hecke groups. Annales Fennici Mathematici, [S. l.], v. 49, n. 2, p. 461–471, 2024. DOI: 10.54330/afm.146802. Disponível em: https://afm.journal.fi/article/view/146802. Acesso em: 11 apr. 2025.