共 50 条
- [3] Twin solutions for nonlinear multipoint conjugate boundary value problems DYNAMICS OF CONTINUOUS DISCRETE AND IMPULSIVE SYSTEMS, 1999, 5 (1-4): : 283 - 293
- [6] POSITIVE SOLUTIONS FOR A CLASS OF SINGULAR BOUNDARY-VALUE-PROBLEMS BOLLETTINO DELLA UNIONE MATEMATICA ITALIANA, 1995, 9A (02): : 273 - 286