Modulational instability and peak solitary wave in a discrete nonlinear electrical transmission line described by the modified extended nonlinear Schrödinger equationGuy Roger Deffo, Serge Bruno Yamgoue and Francois Beceau PelapEur. Phys. J. B, 91 10 (2018) 242DOI: https://doi.org/10.1140/epjb/e2018-90217-3