%0 Journal Article %A D. A. Frank-Kamenetskii %T Multiple production of nucleon pairs by thermal photons in an open cosmologic model %J Doklady Akademii Nauk %D 1962 %P 307-309 %V 144 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1962_144_2_a15/ %G ru %F DAN_1962_144_2_a15