%0 Journal Article %A V. A. Il'in %T On a connection between the form of the boundary conditions and the basis property and the property of equiconvergence with a trigonometric series of expansions in root functions of a nonselfadjoint differential operator %J Differencialʹnye uravneniâ %D 1994 %P 1516-1529 %V 30 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1994_30_9_a4/ %G ru %F DE_1994_30_9_a4