%0 Journal Article %A J. Bonet %A C. Fernández %A R. Meise %T Characterization of the omega-hypoelliptic convolution operators on ultradistributions %J Annales Fennici Mathematici %D 2000 %P 261-284 %V 25 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/AFM_2000_25_2_a0/ %G en %F AFM_2000_25_2_a0