%0 Journal Article %A Aris Tersenov %T On the solvability of the Lyapunov equation for nonselfadjoint differential operators of order $2m$ with nonlocal boundary conditions %J Annales Polonici Mathematici %D 2001 %P 79-104 %V 77 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap77-1-7/ %R 10.4064/ap77-1-7 %G en %F 10_4064_ap77_1_7