@article{MAN_1987__279_3_164327,
     author = {Roland Gillard},
     title = {Croissance du nombre de classes dans des {Zl-extensions} li\'ees aux corps quadratiques imaginaires.},
     journal = {Mathematische Annalen},
     pages = {349--372},
     publisher = {mathdoc},
     volume = {279},
     number = {3},
     year = {1987},
     zbl = {0646.12003},
     url = {http://geodesic.mathdoc.fr/item/MAN_1987__279_3_164327/}
}