TY  - JOUR
AU  - I. M. Glazman
TI  - On the negative part of the spectrum of one-dimensional and multidimensional differential operators over vector-functions
JO  - Doklady Akademii Nauk
PY  - 1958
SP  - 421
EP  - 424
VL  - 119
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1958_119_3_a4/
LA  - ru
ID  - DAN_1958_119_3_a4
ER  -