Author:
Belabas Karim,Bernardi Dominique,Perrin-Riou Bernadette
Reference10 articles.
1. [1] Bost, Jean-Benoît Introduction to Compact Riemann Surfaces, Jacobians, and Abelian Varieties, From number theory to physics (Les Houches, 1989), Springer, 1989, pp. 64-211
2. [2] Cremona, John E. Algorithms for modular elliptic curves, Cambridge University Press, 1997
3. [3] Dooms, Ann; Jespers, Eric; Konovalov, Alexander; Verrill, Helena Congruence - Congruence subgroups of SL 2 (ℤ), Version 1.2.2, 2018 (https://www.gap-system.org/Packages/congruence.html)
4. [4] Kulkarni, Ravi S. An Arithmetic-Geometric Method in the Study of the Subgroups of the Modular Group, Am. J. Math., Volume 113 (1991) no. 6, pp. 1053-1133
5. [5] Kurth, Chris A.; Long, Ling Computations with finite index subgroups of PSL 2 (ℤ) using Farey symbols, Advances in algebra and combinatorics, World Scientific, 2008, pp. 225-242