%0 Journal Article %A V. A. Tumanyan %A V. A. Zharkov %A G. S. Stolyarova %T Allowance for pseudotrident processes in estimating the cross-section for the direct formation of electron positron pairs by electrons %J Doklady Akademii Nauk %D 1958 %P 208-210 %V 122 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1958_122_2_a11/ %G ru %F DAN_1958_122_2_a11