| Analytical and numerical treatment of oscillatory mixed differential equations with differentiable delays and advancesFerreira, J. M.; Ford, N. J.; Malique, Md. A.; Pinelas, Sandra; Yan, Y.
 Journal of Computational and Applied Mathematics, 235(17) (2011), 5112-5130 http://dx.doi.org/10.1016/j.cam.2011.04.041
 
 
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