%0 Journal Article %T Dependence of the F2-layer critical frequency median at midlatitudes on geomagnetic activity %A Deminov, M.G. %A Deminova, G.F. %A Depuev, V.K. %A Depueva, A.K. %K midlatitude ionosphere, F2 layer, critical frequency, median, geomagnetic activity, regularity %J Solar-Terrestrial Physics %D 2017 %N 3 %P 6 %I INFRA-M Academic Publishing LLC.