TY  - JOUR
AU  - V. A. Erovenko
TI  - $\lambda $-zones of instability for Hill's differential equation
JO  - Differencialʹnye uravneniâ
PY  - 1975
SP  - 1890
EP  - 1892
VL  - 11
IS  - 10
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1975_11_10_a21/
LA  - ru
ID  - DE_1975_11_10_a21
ER  -