TY  - JOUR
AU  - Popivanov, P.R.
TI  - Local solvability of some classes of linear and nonlinear partial differential equations.
JO  - Rendiconti del seminario matematico
PY  - 1999
SP  - 11
EP  - 21
VL  - 57
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RSM_1999__57_1_122470/
LA  - en
ID  - RSM_1999__57_1_122470
ER  -