Manik, Ropitta Anjelina, Juli Antasari Sinaga, and Gayus Simarmata. “Application of the Welch-Powell Graph Coloring Algorithm for Optimizing Course Scheduling Using Python (Case Study: Computer Science Program, Faculty of Mathematics and Natural Sciences, HKBP Nommensen University, Pematangsiantar)”. Indonesian Journal of Advanced Research 5, no. 6 (July 7, 2026): 869–892. Accessed August 12, 2026. https://journal.formosapublisher.org/index.php/ijar/article/view/16577.