%0 Journal Article %A V. A. Zhelnorovich %T Generalized wave operators and regularization of perturbation series %J Teoretičeskaâ i matematičeskaâ fizika %D 1970 %P 87-102 %V 2 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1970_2_1_a7/ %G ru %F TMF_1970_2_1_a7