%0 Journal Article %A Diego Mejía %A Christian Pommerenke %T On the derivative of hyperbolically convex functions %J Annales Fennici Mathematici %D 2002 %P 47-56 %V 27 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/AFM_2002_27_1_a3/ %G en %F AFM_2002_27_1_a3