%0 Journal Article %A A. Hinkkanen %T Reality of zeros of derivatives of meromorphic functions %J Annales Fennici Mathematici %D 1997 %P 21-38 %V 22 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/AFM_1997_22_1_a2/ %G en %F AFM_1997_22_1_a2