共 28 条
[1]
Agarwal R.P., 2004, Nonoscillation and oscillation: Theory for functional differential equations, Monographs and
[2]
Agarwal R. P., 2000, OSCILLATION THEORY D, DOI 10.1007/978- 94-015-9401-1
[5]
Braun M., 1993, DIFF EQUAT+, V11
[8]
Grace S.R., 2017, ELECTRON J QUAL THEO, V24, P329