TY  - JOUR
AU  - P. B. Djakov
AU  - B. S. Mityagin
TI  - Instability zones of periodic 1-dimensional Schr\"odinger and Dirac operators
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 2006
SP  - 663
EP  - 766
VL  - 61
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_2006_61_4_a4/
LA  - en
ID  - RM_2006_61_4_a4
ER  -