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"Exact solution of the quadratic mixed-parity Helmholtz-Duffing oscillator."
Alex Elías-Zúñiga (2012)
- Alex Elías-Zúñiga
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Exact solution of the quadratic mixed-parity Helmholtz-Duffing oscillator. Appl. Math. Comput. 218(14): 7590-7594 (2012)
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