Wongkeao , Rungroj, Pakorn Poolsombut, Ngarmcherd Danpattanamongkon, and Decha Samana. “Achromatic Index of Unitary Addition Cayley Graph”. Journal of Science Ladkrabang 33, no. 2 (December 27, 2024): 1–17. accessed April 3, 2025. https://li01.tci-thaijo.org/index.php/science_kmitl/article/view/263249.