@article{MAN_1978__234_163118,
     author = {Serge Lang and Daniel S. Kubert},
     title = {The {p-Primary} {Component} of the {Cuspidal} {Divisor} {Class} {Group} on the {Modular} {Curve} {X(p).}},
     journal = {Mathematische Annalen},
     pages = {25--44},
     publisher = {mathdoc},
     volume = {234},
     year = {1978},
     zbl = {0354.12016},
     url = {http://geodesic.mathdoc.fr/item/MAN_1978__234_163118/}
}