共 50 条
- [31] Existence and multiplicity of positive solutions for a class of four-point boundary value problems [J]. INDIAN JOURNAL OF PURE & APPLIED MATHEMATICS, 2006, 37 (04): : 237 - 245
- [40] BOUNDARY-VALUE PROBLEMS FOR SECOND-ORDER NONHOMOGENEOUS DIFFERENTIAL SYSTEMS [J]. NOTICES OF THE AMERICAN MATHEMATICAL SOCIETY, 1975, 22 (02): : A338 - A338