TY  - JOUR
AU  - A. Dzhuraev
TI  - Some first-order nonelliptic overdetermined systems and their
JO  - Doklady Akademii Nauk
PY  - 1991
SP  - 885
EP  - 891
VL  - 321
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1991_321_5_a3/
LA  - ru
ID  - DAN_1991_321_5_a3
ER  -