%0 Journal Article
%A V. A. Petrov
%T Decrease of cross sections at fixed angles and the phenomenon of planarity
%J Teoretičeskaâ i matematičeskaâ fizika
%D 1979
%P 286-288
%V 40
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TMF_1979_40_2_a11/
%G ru
%F TMF_1979_40_2_a11