%0 Journal Article %A FERGUSON, JAMES T. %T SECOND-ORDER DEFORMATIONS OF HYDRODYNAMIC-TYPE POISSON BRACKETS %J Glasgow mathematical journal %D 2009 %P 75-82 %V 51 %N A %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089508004795/ %R 10.1017/S0017089508004795 %F 10_1017_S0017089508004795