ベールイの定理
Girondo, Ernesto; González-Diez, Gabino (2012), Introduction to compact Riemann surfaces and dessins d'enfants, London Mathematical Society Student Texts, 79, Cambridge: Cambridge University Press, ISBN 978-0-521-74022-7, Zbl 1253.30001
Wushi Goldring (2012), “Unifying themes suggested by Belyi's Theorem”, in Dorian Goldfeld; Jay Jorgenson; Peter Jones et al., Number Theory, Analysis and Geometry. In Memory of Serge Lang, Springer, pp. 181–214, ISBN 978-1-4614-1259-5