, A. H. Rokad, G. V. Ghodasara. “Cordial Labeling in Context of Ring Sum of Graphs”. International Journal on Recent and Innovation Trends in Computing and Communication 3, no. 11 (November 30, 2015): 6272–6275. Accessed February 12, 2026. https://ijritcc.org/index.php/ijritcc/article/view/5033.