共 31 条
[1]
Agarwal R. P., 2002, OSCILLATION THEORY 2, P2
[2]
Ahmad S., 1999, Theory of Ordinary Differential Equations: With Applications of Biology and Engineering
[4]
Burton T. A., 2005, Stability and periodic solutions of ordinary and functional differential equations
[5]
DOSLY O., 2005, Half-linear differential equations
[6]
Elbert A., 1979, C MATH SOC, V30, P53
[7]
Fonda A., 1998, DISCRETE CONTIN DYNA, V4, P91
[8]
GRACE SR, 1981, INDIAN J PURE AP MAT, V12, P950
[9]
Graef John R, 1979, ABH MATH SEM HAMBURG, V49, P70