1. Beazley Cohen, P., Wolfart, J.: Dessins de Grothendieck et variétés de Shimura. C. R. Acad. Sci. Paris Sér. I Math. 315, 1025–1028 (1992)
2. Cremona, J.E.: Algorithms for Modular Elliptic Curves. Cambridge University Press, Cambridge (1992)
3. Farkas, H.M., Kra, I.: Riemann Surfaces. Springer, Berlin (1991)
4. Girondo, E., Torres-Teigell, D., Wolfart, J.: Shimura curves with many uniform dessins. Math. Z 271, 757–779 (2012)
5. Lang, S.: Algebraic Number Theory. Addison-Wesley, Reading (1970)