%0 Journal Article %A M. T. Pikula %T Regularized traces of a differential operator of Sturm--Liouville type with retarded argument %J Differencialʹnye uravneniâ %D 1990 %P 103-109 %V 26 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1990_26_1_a12/ %G ru %F DE_1990_26_1_a12