TY  - JOUR
TI  - Modular Equations and Discrete, Genus-Zero Subgroups of SL(2, R) Containing Γ(N)
JO  - Canadian mathematical bulletin
PY  - 2002
SP  - 36
EP  - 45
VL  - 45
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-2002-004-6/
DO  - 10.4153/CMB-2002-004-6
ID  - 10_4153_CMB_2002_004_6
ER  -