TY  - JOUR
AU  - V. A. Marchenko
AU  - I. V. Ostrovskii
TI  - A characterization of the spectrum of Hill’s operator
JO  - Doklady Akademii Nauk
PY  - 1975
SP  - 1283
EP  - 1286
VL  - 222
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1975_222_6_a5/
LA  - ru
ID  - DAN_1975_222_6_a5
ER  -