Solitons and other solutions to nonlinear Schrödinger equation with fourth-order dispersion and dual power law nonlinearity using several different techniquesElsayed M. E. Zayed, Abdul-Ghani Al-Nowehy and Mona E. M. ElshaterEur. Phys. J. Plus, 132 6 (2017) 259DOI: https://doi.org/10.1140/epjp/i2017-11527-4