%0 Journal Article
%A A.P. Bergamasco
%A P.D. Cordaro
%A G. Petronilho
%T Global solvability for certain classes of underdetermined systems of vector fields.
%J Mathematische Zeitschrift
%D 1996
%P 261-274
%V 223
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1996__223_3_174919/
%F MZ_1996__223_3_174919