TY  - JOUR
AU  - I. N. Braeutigam
AU  - K. A. Mirzoev
AU  - T. A. Safonova
TI  - An Analog of Orlov's Theorem on the Deficiency Index of Second-Order Differential Operators
JO  - Matematičeskie zametki
PY  - 2015
SP  - 314
EP  - 317
VL  - 97
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_2015_97_2_a14/
LA  - ru
ID  - MZM_2015_97_2_a14
ER  -