TY  - JOUR
AU  - L. I. Danilov
TI  - On the spectra of two-dimensional periodic Schr\"odinger and Dirac operators
JO  - Izvestiya Instituta Matematiki i Informatiki Udmurtskogo Gosudarstvennogo Universiteta
PY  - 2002
SP  - 3
EP  - 98
VL  - 26
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IIMI_2002_26_3_a0/
LA  - ru
ID  - IIMI_2002_26_3_a0
ER  -