%0 Journal Article %A N. E. Nyun'ko %A Yu. N. Tyukhtyaev %T Calculation of single-photon exchange diagrams in the quasipotential approach by means of the polarization operator %J Teoretičeskaâ i matematičeskaâ fizika %D 1972 %P 56-63 %V 12 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1972_12_1_a5/ %G ru %F TMF_1972_12_1_a5