@Article{npg-9-221-2002,
AUTHOR = {Grimshaw, R. and Pelinovsky, E. and Poloukhina, O.},
TITLE = {Higher-order Korteweg-de Vries models for internal solitary waves in a stratified shear flow with a free surface},
JOURNAL = {Nonlinear Processes  in Geophysics},
VOLUME = {9},
YEAR = {2002},
NUMBER = {3/4},
PAGES = {221--235},
URL = {http://www.nonlin-processes-geophys.net/9/221/2002/},
ISSN = {1023-5809}
}