“Solving of Chromatic Number, Chromatic Polynomial and Chromaticity for a Kind of 6-Bridge Graph Using Maplesoft”. Iraqi Journal of Science 58, no. 4A (November 29, 2021): 1955–1962. Accessed May 13, 2024. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/5690.