TY  - JOUR
AU  - V. M. Frolov
TI  - The width of the $n$th zone of instability of Mathieu's equation
JO  - Differencialʹnye uravneniâ
PY  - 1982
SP  - 1363
EP  - 1368
VL  - 18
IS  - 8
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1982_18_8_a8/
LA  - ru
ID  - DE_1982_18_8_a8
ER  -