@article{AIHPC_1998__15_4_517_0,
author = {Citti, G.},
title = {$C^\infty $ regularity of solutions of the Levi equation},
journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
volume = {15},
year = {1998},
pages = {517-534},
zbl = {0921.35033},
language = {en},
url = {http://dml.mathdoc.fr/item/AIHPC_1998__15_4_517_0}
}
Citti, G. $C^\infty $ regularity of solutions of the Levi equation. Annales de l'I.H.P. Analyse non linéaire, Tome 15 (1998) pp. 517-534. http://gdmltest.u-ga.fr/item/AIHPC_1998__15_4_517_0/
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