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M. Ali A, أحمد, M. Abdullah M, محمود. Schultz and Modified Schultz Polynomials for Vertex – Identification Chain and Ring – for Hexagon Graphs. RJCSM [Internet]. 2025 Jun. 25 [cited 2025 Aug. 5];15(1):25-38. Available from: https://rjps.uomosul.edu.iq/index.php/csmj/article/view/19454