%0 Journal Article %A Hajir, Farshid %A Maire, Christian %T On the Invariant Factors of Class Groups in Towers of Number Fields %J Canadian journal of mathematics %D 2018 %P 142-172 %V 70 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-2017-032-9/ %R 10.4153/CJM-2017-032-9 %F 10_4153_CJM_2017_032_9