%0 Journal Article %A A. V. Dmitruk %T A~condition of Jacobi type for a~quadratic form to be nonnegative on a~finite-faced cone %J Izvestiya. Mathematics %D 1982 %P 525-535 %V 18 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1982_18_3_a5/ %G en %F IM2_1982_18_3_a5