TY  - JOUR
AU  - V. F. Lazutkin
TI  - An estimate of the length of the gaps in the spectrum of the Laplace operator for a plane convex domain
JO  - Doklady Akademii Nauk
PY  - 1979
SP  - 20
EP  - 23
VL  - 245
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1979_245_1_a3/
LA  - ru
ID  - DAN_1979_245_1_a3
ER  -