%0 Journal Article %A I. A. Grigor'eva %T Concerning the form of extremal non-negative polynomials whose coefficients are subject to several linear relations %J Doklady Akademii Nauk %D 1965 %P 739-742 %V 162 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1965_162_4_a3/ %G ru %F DAN_1965_162_4_a3