共 11 条
[1]
Agarwal R. P., 1999, RESULTS MATH, V35, P3, DOI [DOI 10.1007/BF03322019, 10.1007/BF03322019]
[6]
Hilger S., 1990, Results Math, V18, P18, DOI [10.1007/BF03323153, DOI 10.1007/BF03323153]
[7]
Kaufmann E. R., 2003, ELECT J DIFFERENTIAL, V2003, P1
[9]
Kelley W.G., 2001, Dynamic Equations on Time Scales: AnIntroduction With Applications, DOI DOI 10.1007/978-1-4612-0201-1