Sami, H. H. ., A. S. . Mahmood, and M. K. Ahmed. “On ℵc-Method of E-Abacus Diagram: On ℵc-Method of E-Abacus Diagram”. Journal of Education and Science, vol. 35, no. 1, Jan. 2026, pp. 8-15, doi:10.33899/jes.v35i1.49254.