A new approach to exact optical soliton solutions for the nonlinear Schrödinger equationV. F. Morales-Delgado, J. F. Gómez-Aguilar and Dumitru BaleanuEur. Phys. J. Plus, 133 5 (2018) 189DOI: https://doi.org/10.1140/epjp/i2018-12020-4