%0 Journal Article %A Yu. L. Stankevich %A V. G. Kalinin %T Fast electrons and X-ray radiation in the initial stage of impulse spark discharge development in the air %J Doklady Akademii Nauk %D 1967 %P 72-73 %V 177 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1967_177_1_a19/ %G ru %F DAN_1967_177_1_a19