%0 Journal Article %A E. V. Ferapontov %T Nonlocal matrix hamiltonian operators, differential geometry, and applications %J Teoretičeskaâ i matematičeskaâ fizika %D 1992 %P 452-462 %V 91 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1992_91_3_a9/ %G ru %F TMF_1992_91_3_a9