Bifurcation and resonance in a fractional Mathieu-Duffing oscillator J.H. Yang, Miguel A.F. Sanjuán and H.G. Liu Eur. Phys. J. B, 88 11 (2015) 310 Published online: 26 November 2015 DOI: 10.1140/epjb/e2015-60315-y