Al-Nowehy, A.-G. , Zayed, E.M.E. , Arnous, A.H. , Yildirim, Y. , Moraru, L. and Biswas, .A. 2025. Dark and Singular Optical Solitons for Kundu-Eckhaus Equation with Differential Group Delay by the Generalized ϕ6-Model Expansion. Contemporary Mathematics . 6, 3 (May 2025), 3230–3252. DOI:https://doi.org/10.37256/cm.6320256902.