TY  - JOUR
AU  - V. F. Lazutkin
AU  - T. F. Pankratova
TI  - Asymptotics of the width of gaps in the spectrum of the Sturm--Liouville operator with a periodic potential
JO  - Doklady Akademii Nauk
PY  - 1974
SP  - 1048
EP  - 1051
VL  - 215
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1974_215_5_a7/
LA  - ru
ID  - DAN_1974_215_5_a7
ER  -