%0 Journal Article %A W. Slowikowski %T On Hörmander's Theorem about Surjections of ... . %J Mathematica Scandinavica %D 1972 %P 267-280 %V 30 %I mathdoc %U http://geodesic.mathdoc.fr/item/MS2_1972__30_166242/ %F MS2_1972__30_166242