%0 Journal Article %A Italo Vecchi %A Sijue Wu %T On L1-Vorticity for 2-D incompressible flow. %J Manuscripta mathematica %D 1993 %P 403-412 %V 78 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1993__78_4_155817/ %F MM2_1993__78_4_155817