Multiplicity results for three-point boundary value problems with a non-well-ordered upper and lower solution condition

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@article{Xian2007MultiplicityRF, title={Multiplicity results for three-point boundary value problems with a non-well-ordered upper and lower solution condition}, author={Xu Xian and Donal O'Regan and Jingxian Sun}, journal={Mathematical and Computer Modelling}, year={2007}, volume={45}, pages={189-200} }