Yaseen, Abdulkhalik, and Farah Hasim Mohammed. “Construction of Arcs (k, 5) - at the Level of Dizark PG (2,9) (*)”. Journal of Education and Science (JES) 22, no. 1 (March 1, 2009): 133–150. Accessed August 6, 2025. https://ojs.uomosul.edu.iq/index.php/edusj/article/view/23966.