| Article ID | Journal | Published Year | Pages | File Type | 
|---|---|---|---|---|
| 10346871 | Computers & Mathematics with Applications | 2005 | 10 Pages | 
Abstract
												where f is allowed to change sign. We provide sufficient conditions for the existence of at least two positive solutions by applying a new fixed-point theorem in cones.
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											Authors
												Shijie Dong, Weigao Ge, 
											