%0 Journal Article %A Kamienny, S. %A Stevens, G. %T Special values of $L$-functions attached to $X_1( N)$ %J Compositio Mathematica %D 1983 %P 121-142 %V 49 %N 1 %I Martinus Nijhoff Publishers %U http://www.numdam.org/item/CM_1983__49_1_121_0/ %G en %F CM_1983__49_1_121_0