TY  - JOUR
AU  - I. V. Kamenev
TI  - Necessary and sufficient conditions for the disconjugacy of the solutions of a second order linear equation
JO  - Differencialʹnye uravneniâ
PY  - 1976
SP  - 751
EP  - 753
VL  - 12
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1976_12_4_a18/
LA  - ru
ID  - DE_1976_12_4_a18
ER  -