%0 Journal Article %A S. I. Mitrokhin %T Trace formulas for a boundary value problem with a functional-differential equation with a discontinuous coefficient %J Differencialʹnye uravneniâ %D 1986 %P 927-931 %V 22 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1986_22_6_a1/ %G ru %F DE_1986_22_6_a1