%0 Journal Article %A V. P. Demidov %T Transverse refraction index of a plasma in the neighbourhood of cyclotron frequencies and their harmonics %J Doklady Akademii Nauk %D 1961 %P 1342-1344 %V 139 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_139_6_a18/ %G ru %F DAN_1961_139_6_a18