%0 Journal Article %A P. E. Krasnushkin %T Explanation of some features of the ham short-wave long-range communications %J Doklady Akademii Nauk %D 1981 %P 94-96 %V 259 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1981_259_1_a22/ %G ru %F DAN_1981_259_1_a22