Nonlinear dynamics and comparative analysis of hybrid piezoelectric-inductive energy harvesters subjected to galloping vibrationsU. Javed, H.L. Dai and A. AbdelkefiEur. Phys. J. Special Topics, 224 14-15 (2015) 2929-2948DOI: https://doi.org/10.1140/epjst/e2015-02599-y