Solving of Chromatic Number, Chromatic Polynomial and Chromaticity for a Kind of 6-Bridge Graph Using Maplesoft. Iraqi Journal of Science [Internet]. 2021 Nov. 29 [cited 2024 May 12];58(4A):1955-62. Available from: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/5690