TY  - JOUR
AU  - L. I. Vainerman
TI  - Self-conjugacy of abstract differential operators of the hyperbolic type
JO  - Matematičeskie zametki
PY  - 1976
SP  - 703
EP  - 708
VL  - 20
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1976_20_5_a8/
LA  - ru
ID  - MZM_1976_20_5_a8
ER  -