TY  - JOUR
AU  - S. D. Shmulevich
TI  - The distribution of the eigenvalues of the operator of a selfadjoint elliptic boundary value problem in an unbounded domain
JO  - Doklady Akademii Nauk
PY  - 1969
SP  - 959
EP  - 962
VL  - 189
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1969_189_5_a9/
LA  - ru
ID  - DAN_1969_189_5_a9
ER  -