TY  - JOUR
AU  - A.P. Bergamasco
AU  - P.D. Cordaro
AU  - G. Petronilho
TI  - Global solvability for certain classes of underdetermined systems of vector fields.
JO  - Mathematische Zeitschrift
PY  - 1996
SP  - 261
EP  - 274
VL  - 223
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1996__223_3_174919/
ID  - MZ_1996__223_3_174919
ER  -