et. al., Remala Mounika Lakshmi,. 2021. “Results on a Chromatic Number of a Bi-Polar Fuzzy Complete Bipartite Graphs and Labelling of Tri-Polar Fuzzy Graphs ”. Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12 (2):1040-46. https://www.turcomat.org/index.php/turkbilmat/article/view/1118.