%0 Journal Article %A A. S. Krivonogov %T A portion of matrices with real spectrum in a~real symplectic Lie algebra %J Algebra i logika %D 2011 %P 547-552 %V 50 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_2011_50_4_a6/ %G ru %F AL_2011_50_4_a6