Leeratanavalee, Sorasak, and Waranyu Moonta. 2025. “Achromatic Numbers of $n$-Complete Starfish and $SF(n, 1)$ Graphs”. International Journal of Open Problems in Computer Science and Mathematics 18 (4):39-51. https://ijopcm.icsrs.uk/index.php/journal/article/view/41.