共 24 条
- [1] Agarwal R.P., 1999, POSITIVE SOLUTIONS D
- [5] Singular discrete boundary value problems [J]. APPLIED MATHEMATICS LETTERS, 1999, 12 (04) : 127 - 131
- [6] Ben-Naoum A.K., 1997, DIFFERENTIAL INTEGRA, V10, P1093
- [8] Deimling K., 2010, NONLINEAR FUNCTIONAL, DOI DOI 10.1007/978-3-662-00547-7