%0 Journal Article %A A. I. Shnirel'man %T On the geometry of the group of diffeomorphisms and the dynamics of an ideal incompressible fluid %J Sbornik. Mathematics %D 1987 %P 79-105 %V 56 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1987_56_1_a5/ %G en %F SM_1987_56_1_a5