Rüdiger W. Braun,
Reinhold Meise,
and D. Vogt.
Characterization of the linear partial differential operators with constant coefficients which are surjective on nonquasianalytic classes of Roumieu type on ${\bf R}^N$.
Math. Nachr.,
168:19-54,
1994.
ISSN: 0025-584X.