%0 Journal Article
%A Bruce Crauder
%T Two Reduction Theorems for Threefold Birational Morphisms.
%J Mathematische Annalen
%D 1984
%P 13-26
%V 269
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAN_1984__269_163919/
%F MAN_1984__269_163919