B, Vasuki, Shobana L, and Mohammed Ali Ahmed. “Face Antimagic Labeling for Double Duplication of Barycentric and Middle Graphs”. Iraqi Journal of Science 63, no. 9 (September 30, 2022): 3902–3908. Accessed June 21, 2026. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/5478.