TY  - JOUR
AU  - N. V. Azbelev
TI  - The zeros of the solutions of a second order linear differential equation with retarded argument
JO  - Differencialʹnye uravneniâ
PY  - 1971
SP  - 1147
EP  - 1157
VL  - 7
IS  - 7
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1971_7_7_a0/
LA  - ru
ID  - DE_1971_7_7_a0
ER  -