%0 Journal Article %A M. F. Kotsur %T Radii of starlikeness and convexity in certain classes of analytic functions in the disk %J Matematičeskie zametki %D 1979 %P 675-680 %V 25 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1979_25_5_a4/ %G ru %F MZM_1979_25_5_a4