Li, Jianguo, Ge, Shan, Xu, Changqing. Neighbor sum distinguishing total colorings of planar graphs with girth at least 5. A Canadian journal of applied mathematics, computer science and statistics [Internet]. 2017 Sep. 9 [cited 2025 Nov. 6];104. Available from: https://utilitasmathematica.com/index.php/Index/article/view/1183