%0 Journal Article %A M. G. Muradyan %T Periodic solutions of a matrix Riccati equation %J Differencialʹnye uravneniâ %D 1984 %P 2176-2178 %V 20 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1984_20_12_a25/ %G ru %F DE_1984_20_12_a25