@article{01779125,
title = {The averaging of nonlocal Hamiltonian structures in Whitham's method.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {30},
year = {2002},
pages = {399-434},
doi = {10.1155/S0161171202106120},
zbl = {1046.70015},
language = {en},
url = {http://dml.mathdoc.fr/item/01779125}
}
Maltsev, Andrei Ya. The averaging of nonlocal Hamiltonian structures in Whitham's method.. International Journal of Mathematics and Mathematical Sciences, Tome 30 (2002) pp. 399-434. doi : 10.1155/S0161171202106120. http://gdmltest.u-ga.fr/item/01779125/