%0 Journal Article %A Prakash G. Umarani %T The radius of close-to-convexity of $V_k(ϱ)$ %J Annales Polonici Mathematici %D 1981 %P 291-294 %V 40 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-40-3-291-294/ %R 10.4064/ap-40-3-291-294 %G en %F 10_4064_ap_40_3_291_294