@article{DE_1986_22_6_a1,
     author = {S. I. Mitrokhin},
     title = {Trace formulas for a boundary value problem with a functional-differential equation with a discontinuous coefficient},
     journal = {Differencialʹnye uravneni\^a},
     pages = {927--931},
     publisher = {mathdoc},
     volume = {22},
     number = {6},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1986_22_6_a1/}
}