TY  - JOUR
AU  - M. D. Dolberg
AU  - N. N. Yasnitskaya
TI  - Lower bounds for the oscillation frequencies of an elastic system. Generalized Dunkerly--Papkovich estimates
JO  - Doklady Akademii Nauk
PY  - 1973
SP  - 1317
EP  - 1319
VL  - 212
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1973_212_6_a12/
LA  - ru
ID  - DAN_1973_212_6_a12
ER  -