%0 Journal Article %A Yu. A. Baurov %A Yu. N. Babaev %A V. K. Ablekov %T On the lack of uniqueness in the electromagnetic field propagation velocity %J Doklady Akademii Nauk %D 1982 %P 68-70 %V 262 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1982_262_1_a15/ %G ru %F DAN_1982_262_1_a15