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"Approximate periodic solutions for the Helmholtz-Duffing equation."
Hassan Askari et al. (2011)
- Hassan Askari, Zia Saadatnia, Davood Younesian, Ahmet Yildirim, M. Kalami Yazdi:
Approximate periodic solutions for the Helmholtz-Duffing equation. Comput. Math. Appl. 62(10): 3894-3901 (2011)
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