@article{GDZPPN002112760,
title = {Necessary and sufficient conditions for the local solvability in hyperfunctions of a class of systems of complex vector fields.},
journal = {Inventiones mathematicae},
volume = {121},
year = {1995},
pages = {339-360},
zbl = {0834.35004},
url = {http://dml.mathdoc.fr/item/GDZPPN002112760}
}
Treves, Francois; Cordaro, Paulo D. Necessary and sufficient conditions for the local solvability in hyperfunctions of a class of systems of complex vector fields.. Inventiones mathematicae, Tome 121 (1995) pp. 339-360. http://gdmltest.u-ga.fr/item/GDZPPN002112760/