Haque, Kh Md Mominul, Xiaohui, Lin, Yuansheng, Yang, and Pingzhong, Zhao. 2010. “On the Prime Labeling of Generalized Petersen Graph P (n, 1)”. Utilitas Mathematica 83 (September). https://utilitasmathematica.com/index.php/Index/article/view/665.