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Samir, I. , El-Sham, O. , El-barkoki, R. , M. Ahmed, H., Abbas, W. and Hashemi, M.S. 2024. Extraction of Solitons in Optical Fibers for the (2+1)-Dimensional Perturbed Nonlinear Schrödinger Equation Via the Improved Modified Extended Tanh Function Technique. Contemporary Mathematics. 5, 2 (Apr. 2024), 2397–2410. DOI:https://doi.org/10.37256/cm.5220244301.