%0 Journal Article %A Metsänkylä, Tauno %T On the parity of the class numbers of real abelian fields %J Communications in Mathematics %D 1998 %P 159-166 %V 06 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/COMIM_1998__6_1_a19/ %G en %F COMIM_1998__6_1_a19