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Existence theorems for higher order nonlinear periodic boundary value problems |
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| Authors: | W.V. Petryshyn Z.S. Yu |
| Affiliation: | Mathematics Department, Rutgers University, New Brunswick, New Jersey 08903, U.S.A.;Mathematics Department, Jilin University, People''s Republic of China |
| Abstract: | |
| Keywords: | Periodic solutions higher order ordinary differential equations semilinear equations approximation-solvability |
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