%0 Journal Article %A Thomas Kalmes %T Surjectivity of partial differential operators on ultradistributions of Beurling type in two dimensions %J Studia Mathematica %D 2010 %P 87-102 %V 201 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm201-1-7/ %R 10.4064/sm201-1-7 %G en %F 10_4064_sm201_1_7