Al-Ibrahim, Mohamed, Naser Al-Ibrahim, Yousef Rafique, and Omar Al-Sumait. “Complementary Graph Coloring”. International Journal of Computer (IJC) 23, no. 1 (November 9, 2016): 42–52. Accessed April 26, 2024. https://ijcjournal.org/index.php/InternationalJournalOfComputer/article/view/736.