TY  - JOUR
AU  - Nguyen Tien Zung
TI  - The complexity of integrable Hamiltonian systems on a~prescribed three-dimensional constant-energy submanifold
JO  - Sbornik. Mathematics
PY  - 1993
SP  - 507
EP  - 533
VL  - 75
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1993_75_2_a10/
LA  - en
ID  - SM_1993_75_2_a10
ER  -