%0 Journal Article %A L. G. Kachurin %A B. Kh. Petkov %T Transformation of optical radiation upon propagation through %J Doklady Akademii Nauk %D 1991 %P 586-589 %V 318 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1991_318_3_a17/ %G ru %F DAN_1991_318_3_a17