TY  - JOUR
AU  - G. V. Virabyan
TI  - Spectral properties of operators generated by systems of differential equations of higher order and of Sobolev type
JO  - Doklady Akademii Nauk
PY  - 1963
SP  - 13
EP  - 16
VL  - 150
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1963_150_1_a1/
LA  - ru
ID  - DAN_1963_150_1_a1
ER  -