%0 Journal Article %A L. V. Levantovskii %T Singularities of the boundary of the stability domain %J Funkcionalʹnyj analiz i ego priloženiâ %D 1982 %P 44-48 %V 16 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1982_16_1_a5/ %G ru %F FAA_1982_16_1_a5