%0 Journal Article %A J.H.M. Steenbrink %T Semicontinuity of the singularity spectrum. %J Inventiones mathematicae %D 1985 %P 557-566 %V 79 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1985__79_143212/ %F IM_1985__79_143212