@article{BSMF_1978__106__337_0,
     author = {Gras, Georges},
     title = {Nombre de $\varphi $-classes invariantes. {Application} aux classes des corps ab\'eliens},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {337--364},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {106},
     year = {1978},
     doi = {10.24033/bsmf.1876},
     mrnumber = {80c:12013},
     zbl = {0392.12005},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/bsmf.1876/}
}