%0 Journal Article %A D. Ya. Petrina %T Completeness of perturbation theory amplitudes in amplitude space %J Doklady Akademii Nauk %D 1967 %P 295-297 %V 173 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1967_173_2_a15/ %G ru %F DAN_1967_173_2_a15