%0 Journal Article %A Kostov, Vladimir %T On Descartes' rule of signs for hyperbolic polynomials %J Serdica Mathematical Journal %D 2023 %P 251-268 %V 49 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/SMJ2_2023_49_4_a2/ %G en %F SMJ2_2023_49_4_a2