%0 Journal Article %A Ê. Dewan %A S. Hans %T On Extremal Properties for the Derivative of Polynomials %J Mathematica balkanica %D 2009 %P 27 %V 23 %N 1-2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MABA_2009_23_1-2_a2/ %F MABA_2009_23_1-2_a2