M. . Mohamed, A. . Elsayed, and M. . Voskoglou, “Collaboration of Vague Theory and Mathematical Techniques for Optimizing Healthcare by Recommending Optimal Blockchain Supplier”, Sustain. Mach. Intell. J., vol. 6, pp. (5):1–15, Mar. 2024, doi: 10.61356/SMIJ.2024.66105.