%0 Journal Article %A A. P. Molchanov %T Radioastronomic observations used in determining the position of the region where the solar atmosphere characteristics change rapidly %J Doklady Akademii Nauk %D 1964 %P 302-304 %V 158 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1964_158_2_a14/ %G ru %F DAN_1964_158_2_a14