TY - JOUR AU - Kenku, M. A. AU - Momose, Fumiyuki TI - Automorphism groups of the modular curves $X_0(N)$ JO - Compositio Mathematica PY - 1988 SP - 51 EP - 80 VL - 65 IS - 1 PB - Kluwer Academic Publishers UR - http://www.numdam.org/item/CM_1988__65_1_51_0/ LA - en ID - CM_1988__65_1_51_0 ER -