%0 Journal Article %A V. V. Bogorodsky %A V. P. Tripolnikov %T Electromagnetic characteristics of sea ice in the range of $30$ -- $400$ Mcps %J Doklady Akademii Nauk %D 1973 %P 577-579 %V 213 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1973_213_3_a18/ %G ru %F DAN_1973_213_3_a18