Akhlak Mansuri, Rohit Mehta, and R. S. Chandel. “1-Harmonious Coloring of Triangular Snakes”. Malaya Journal of Matematik 8, no. 04 (October 1, 2020): 2116–2126. Accessed April 14, 2025. https://www.malayajournal.org/index.php/mjm/article/view/1860.