%0 Journal Article %A V. I. Ivanov %T Some extremal properties of polynomials and inverse inequalities of approximation theory %J Informatics and Automation %D 1980 %P 79-110 %V 145 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1980_145_a3/ %G ru %F TRSPY_1980_145_a3