@incollection{MSMF_1980_2_2__49_0,
     author = {Gross, Benedict H. and Zagier, Don},
     title = {On the critical values of {Hecke} {L-series}},
     booktitle = {Fonctions ab\'eliennes et nombres transcendants},
     editor = {Bertrand, Daniel and Waldschmidt, Michel},
     series = {M\'emoires de la Soci\'et\'e Math\'ematique de France},
     pages = {49--54},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {2},
     year = {1980},
     doi = {10.24033/msmf.279},
     mrnumber = {82g:14026},
     zbl = {0462.14015},
     url = {http://www.numdam.org/articles/10.24033/msmf.279/}
}