%0 Journal Article
%A Dao Vong Dyc
%A Nguyen Van Hieu
%T Velocity of propagation of a~signal, and the space-time metric in nonlinear electrodynamics
%J Teoretičeskaâ i matematičeskaâ fizika
%D 1970
%P 55-66
%V 2
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TMF_1970_2_1_a3/
%G ru
%F TMF_1970_2_1_a3