T. K. Mathew Varkey, and B. S. Sunoj. “ADCSS-Labeling of Product Related Graphs”. International Journal of Mathematics And its Applications 4, no. 2 - B (May 15, 2016): 145–149. Accessed May 19, 2024. http://ijmaa.in/index.php/ijmaa/article/view/1036.