%0 Journal Article %A Hermann von Helmholtz %T On integrals of the hydrodynamical equations, which express vortex-motion %J Russian journal of nonlinear dynamics %D 2006 %P 473-507 %V 2 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/ND_2006_2_4_a7/ %G ru %F ND_2006_2_4_a7