%0 Journal Article %A B. S. Pavlov %T Scattering theory and the ``nonphysical sheet'' for a system of ordinary differential equations %J Doklady Akademii Nauk %D 1970 %P 36-39 %V 193 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1970_193_1_a7/ %G ru %F DAN_1970_193_1_a7