Controllable rational solutions in nonlinear optics fibers Souleymanou Abbagari, Serge P. Mukam, Alphonse Houwe, Victor K. Kuetche, Mustafa Inc, Serge Y. Doka, Bandar Almohsen and Thomas B. Bouetou Eur. Phys. J. Plus, 135 8 (2020) 633 Published online: 07 August 2020 DOI: 10.1140/epjp/s13360-020-00640-0