TY  - JOUR
AU  - S. P. Novikov
TI  - Levels of quasiperiodic functions on a~plane, and Hamiltonian systems
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1999
SP  - 1031
EP  - 1032
VL  - 54
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1999_54_5_a10/
LA  - en
ID  - RM_1999_54_5_a10
ER  -