%0 Journal Article %A L. D. Faddeev %T On the separation of self-action and scattering effects in perturbation theory %J Doklady Akademii Nauk %D 1963 %P 573-576 %V 152 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1963_152_3_a18/ %G ru %F DAN_1963_152_3_a18