TY  - JOUR
AU  - M. G. Gimadislamov
TI  - Sufficient conditions that the minimum and maximum of partial differential operators should coincide and that their spectra should be discrete
JO  - Matematičeskie zametki
PY  - 1968
SP  - 301
EP  - 312
VL  - 4
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1968_4_3_a5/
LA  - ru
ID  - MZM_1968_4_3_a5
ER  -