%0 Journal Article %A V. V. Tikhomirov %T The unconditional basis property of root vectors of loaded operators %J Differencialʹnye uravneniâ %D 1989 %P 355-357 %V 25 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1989_25_2_a36/ %G ru %F DE_1989_25_2_a36