%0 Journal Article %A I. S. Krasil'shchik %T Cohomological approach to poisson structures on nonlinear evolution equations %J Lobachevskii journal of mathematics %D 1999 %P 127-145 %V 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/LJM_1999_3_a6/ %G en %F LJM_1999_3_a6