%0 Journal Article %A G. A. Yakovlev %A V. S. Yakovleva %T Distortion of radiation background in urban environment due to aggressive influence of technosphere. stage 1: radon and alpha-background %J Vestnik KRAUNC. Fiziko-matematičeskie nauki %D 2020 %P 154-164 %V 32 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/VKAM_2020_32_3_a12/ %G ru %F VKAM_2020_32_3_a12