[1] Agarwal, R. P.:
Boundary Value Problems for Higher Order Differential Equations. World Scientific Singapore (1986).
MR 1021979 |
Zbl 0619.34019
[2] O'Regan, D.:
Existence Theory for Nonlinear Ordinary Differential Equations. Kluwer Academic Dordrecht (1997).
MR 1449397 |
Zbl 1077.34505
[10] Wong, P. J. Y., Agarwal, R. P.:
Multiple solutions for a system of $(n_{i},p_{i})$ boundary value problems. J. Anal. Appl. 19 (2000), 511-528.
MR 1769006 |
Zbl 1160.34313
[13] Yao, Q.:
Existence of $n$ solutions and/or positive solutions to a semipositone elastic beam equation. Nonlinear Anal. TMA 66 (2007), 138-150.
MR 2271642 |
Zbl 1113.34013
[15] Hewit, E., Stromberg, K.: Real and Abstract Analysis. Springer Berlin (1978).