Walther, H. (1989). Hyberbolic periodic solutions, heteroclinic connections and tranversal homoclinic points in autonomous differential delay equations. American Mathematical Society.
Παραπομπή σε μορφή Chicago (17η εκδ.)Walther, Hans-Otto. Hyberbolic Periodic Solutions, Heteroclinic Connections and Tranversal Homoclinic Points in Autonomous Differential Delay Equations. Rhode island: American Mathematical Society, 1989.
Παραπομπή σε μορφή MLA (9th εκδ.)Walther, Hans-Otto. Hyberbolic Periodic Solutions, Heteroclinic Connections and Tranversal Homoclinic Points in Autonomous Differential Delay Equations. American Mathematical Society, 1989.
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