[1]孙经先.非线性Hammerstein型积分方程正解的存在性及其应用.数学年刊,1988,9A:90-96
[2]Anuradha V, Hai D D, Shivaji R. Existence results for superlinear semipostone BVP′s.Proceeding of the American Mathematical Society,1996,124(3) 757-763
[3]Ravi P, Agarwal, Donal O′Regan. A note on exitence of nonnegative solutions to singular semipositone problems.Nonlinear Analysis, 1999,3 6:615-622
[4] Liu Xiyu, Yan Baoqiang. Boundaryirregular solutions to singular boundary value problems. Nonlinear Analysis, 1998, 32(5):633-646
[5]Guo Dajun, Lakshmikantham V. Nonlinear Problem in Abstract Cones.Boston: Academic press, INC, 1988
|