%0 Journal Article %A H.G. Grundmann %T Defect series and nonrational Hilbert modular threefolds. %J Mathematische Annalen %D 1994 %P 77-88 %V 300 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1994__300_2_165242/ %F MAN_1994__300_2_165242