%0 Journal Article %A Antonio Lei %T Estimating class numbers over metabelian extensions %J Acta Arithmetica %D 2017 %P 347-364 %V 180 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa170216-27-4/ %R 10.4064/aa170216-27-4 %G en %F 10_4064_aa170216_27_4