TY  - JOUR
AU  - Lee, Chung-Fen
AU  - Yeh, Cheh-Chih
AU  - Gau, Chuen-Yu
TI  - Some oscillation theorems for second order differential equations
JO  - Czechoslovak Mathematical Journal
PY  - 2005
SP  - 845
EP  - 861
VL  - 55
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMJ_2005__55_4_a2/
LA  - en
ID  - CMJ_2005__55_4_a2
ER  -