R. Suja Kumari, and K. Chithamparathanu Pillai. “The Highly \(D_2\) – Distance of Irregular Labeling Fuzzy Graphs on Some Special Graphs”. Malaya Journal of Matematik, vol. 8, no. 04, Oct. 2020, pp. 2333-6, doi:10.26637/MJM0804/0177.