%0 Journal Article %A A. Hinkkanen %T Iteration, level sets, and zeros of derivatives of meromorphic functions %J Annales Fennici Mathematici %D 1998 %P 317-388 %V 23 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/AFM_1998_23_2_a4/ %G en %F AFM_1998_23_2_a4