@article{JRAM_1991__417_153322,
     author = {David E. Rohrlich},
     title = {Nonvanishing of {L-functions} and structure of {Mordell-Weil} groups.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {1--26},
     publisher = {mathdoc},
     volume = {417},
     year = {1991},
     zbl = {0731.11030},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1991__417_153322/}
}