%0 Journal Article %A D. Ştefănescu %A V. Gerdt %A S. Yevlakov %T Estimations of positive roots of polynomials %J Zapiski Nauchnykh Seminarov POMI %D 2009 %P 280-289 %V 373 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_2009_373_a16/ %G en %F ZNSL_2009_373_a16