@article{CM_1983__49_1_121_0,
     author = {Kamienny, S. and Stevens, G.},
     title = {Special values of $L$-functions attached to $X_1( N)$},
     journal = {Compositio Mathematica},
     pages = {121--142},
     publisher = {Martinus Nijhoff Publishers},
     volume = {49},
     number = {1},
     year = {1983},
     mrnumber = {699863},
     zbl = {0519.14018},
     language = {en},
     url = {http://www.numdam.org/item/CM_1983__49_1_121_0/}
}