%0 Journal Article %A Franz Lemmermeyer %T Ideal class groups of cyclotomic number fields II %J Acta Arithmetica %D 1998 %P 59-70 %V 84 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-84-1-59-70/ %R 10.4064/aa-84-1-59-70 %G en %F 10_4064_aa_84_1_59_70