%0 Journal Article %A M. Pikula %T Regularized traces of higher-order differential operators with retarded argument %J Differencialʹnye uravneniâ %D 1985 %P 986-991 %V 21 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1985_21_6_a8/ %G ru %F DE_1985_21_6_a8