R, Vanitha, Vijayalakshmi D, and Mohanappriya G. “P_4-DECOMPOSITION OF LINE AND MIDDLE GRAPH OF SOME GRAPHS”. Kongunadu Research Journal 5, no. 2 (December 30, 2018): 1-6. Accessed May 4, 2024. https://krjournal.com/index.php/krj/article/view/345.