%0 Journal Article %A J. Krzyż %T On the derivative of close-to-convex functions %J Colloquium Mathematicum %D 1963 %P 143-146 %V 10 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-10-1-143-146/ %R 10.4064/cm-10-1-143-146 %G en %F 10_4064_cm_10_1_143_146