TY  - JOUR
AU  - A. Ya. Maltsev
TI  - Conservation of Hamiltonian structures in Whitham's averaging method
JO  - Izvestiya. Mathematics 
PY  - 1999
SP  - 1171
EP  - 1201
VL  - 63
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1999_63_6_a3/
LA  - en
ID  - IM2_1999_63_6_a3
ER  -