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Chow, Shui-Nee ; Wang, Duo
On the monotonicity of the period function of some second order equations. (English). Časopis pro pěstování matematiky, vol. 111 (1986), issue 1, pp. 14-25
MSC: 34C25 | MR 833153 | Zbl 0603.34034 | DOI: 10.21136/CPM.1986.118260
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