共 33 条
[2]
[Anonymous], 1994, Differ. Equations Dyn. Syst., DOI [10.1007/BF02662882, DOI 10.1007/BF02662882]
[3]
[Anonymous], 1992, JAPAN J IND APPL MAT
[4]
[Anonymous], 2011, INTRO DELAY DIFFEREN
[7]
Chen Y., 2003, Can. Appl. Math. Q., V11, P23, DOI DOI 10.1016/J.CAM.2010.10.007.MR2131833