@article{DE_1989_25_6_a2,
     author = {A. I. Domoshnitskii},
     title = {Preserving the sign of the {Green} function of a two-point boundary value problem for an $n$th-order functional-differential equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {934--937},
     publisher = {mathdoc},
     volume = {25},
     number = {6},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1989_25_6_a2/}
}