共 26 条
[2]
AZBELEV NV, 1995, RUSSIAN MATH, V3, P1
[3]
BAINOV DD, 1984, CZECH MATH J, V34, P247
[4]
BANOV DD, 1991, OSCILLATION THEORY N
[5]
Driver R.D., 1977, ORDINARY DELAY DIFFE
[6]
GOPALASAMY K, 1992, STABILIGY OSCILLATIO
[7]
HADDELR KH, 1979, DELAY EQUATIONS BIOL
[9]
Halanay A., 1966, DIFFERENTIAL EQUATIO
[10]
Hale J. K., 1977, Applied Mathematical Sciences, V3