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"Periodic orbits of the fourth-order non-autonomous differential equation ..."
Jaume Llibre, Amar Makhlouf (2012)
- Jaume Llibre, Amar Makhlouf:
Periodic orbits of the fourth-order non-autonomous differential equation iu'''' + qu'' + pu = εF(t, u, u', u'', u'''). Appl. Math. Comput. 219(3): 827-836 (2012)
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