TY  - JOUR
AU  - E. S. Chichkin
TI  - A~non-oscillation theorem for a~linear self-adjoint differential equation of fourth order
JO  - Izvestiâ vysših učebnyh zavedenij. Matematika
PY  - 1960
SP  - 206
EP  - 209
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IVM_1960_4_a22/
LA  - ru
ID  - IVM_1960_4_a22
ER  -