%0 Journal Article
%A V. B. Tulvinskii
%A Yu. A. Shuba
%T On the relative role of direct and indirect transitions in optical absorption
%J Doklady Akademii Nauk
%D 1967
%P 1057-1058
%V 172
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1967_172_5_a17/
%G ru
%F DAN_1967_172_5_a17