TY  - JOUR
AU  - A. I. Domoshnitskii
TI  - Preserving the sign of the Green function of a two-point boundary value problem for an $n$th-order functional-differential equation
JO  - Differencialʹnye uravneniâ
PY  - 1989
SP  - 934
EP  - 937
VL  - 25
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1989_25_6_a2/
LA  - ru
ID  - DE_1989_25_6_a2
ER  -