Guefaifia, Rafik, Sayyed Hashem Rasouli, and Khaled zennir. 2026. “Sub/Super/Solutions/Methods/for/a/Class/of/Fractional/Laplacian/Systems”. Discontinuity, Nonlinearity, and Complexity 13 (4): 601-7. https://doi.org/10.5890/DNC.2024.12.002.