@Article{npg-14-273-2007,
AUTHOR = {Humi, M.},
TITLE = {Density representation of Long's equation},
JOURNAL = {Nonlinear Processes  in Geophysics},
VOLUME = {14},
YEAR = {2007},
NUMBER = {3},
PAGES = {273--283},
URL = {http://www.nonlin-processes-geophys.net/14/273/2007/},
DOI = {10.5194/npg-14-273-2007}
}