%0 Journal Article %A P. M. Akhmet'ev %A O. V. Kunakovskaya %T Integral Formula for a Generalized Sato--Levine Invariant in Magnetic Hydrodynamics %J Matematičeskie zametki %D 2009 %P 524-537 %V 85 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_2009_85_4_a3/ %G ru %F MZM_2009_85_4_a3