%0 Journal Article %A L. V. Bogdanov %A E. V. Ferapontov %T A~nonlocal Hamiltonian formalism for semi-Hamiltonian systems of the hydrodynamic type %J Teoretičeskaâ i matematičeskaâ fizika %D 1998 %P 113-121 %V 116 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1998_116_1_a3/ %G ru %F TMF_1998_116_1_a3