%0 Journal Article %A Sakari Toppila %T On the Spherical Derivative of an Entire Function. %J Manuscripta mathematica %D 1985 %P 225-234 %V 53 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1985__53_155097/ %F MM2_1985__53_155097