%0 Journal Article %T On Zeros of Derivatives of Polynomials %J Canadian mathematical bulletin %D 1968 %P 611-611 %V 11 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1968-077-6/ %R 10.4153/CMB-1968-077-6 %F 10_4153_CMB_1968_077_6