1. Atkin, A.O.L., Lehner, J.: Hecke operators on $$\Gamma _0(m)$$ Γ 0 ( m ) . Math. Ann. 185, 134–160 (1970)
2. Baker, M.H., Gonzalez-Jimenez, E., Gonzalez, J., Poonen, B.: Finiteness results for modular curves of genus at least 2. Am. J. Math. 127(6), 1325–1387 (2005)
3. Bilu, Y., Parent, P., Rebolledo, M.: Rational points on $$X^+_0(p^r)$$ X 0 + ( p r ) (2011). arXiv:1104.4641
4. Cremona, J.E.: Algorithms for Modular Elliptic Curves, 2nd edn. Cambridge University Press, Cambridge (1997)
5. Diamond, F., Shurman, J.: A First Course in Modular Forms. Graduate Texts in Mathematics, vol. 228. Springer, New York (2005)