Shalini Rajendra Babu, Dr. N. Ramya. “Lucky Edge Labeling of H Graph, N Copies of H-Graph, Theta Graph, Duplication of Theta Graphs and Path Union of Theta Graphs”. Annals of the Romanian Society for Cell Biology 25, no. 2 (March 19, 2021): 4480–4497. Accessed April 27, 2024. https://annalsofrscb.ro/index.php/journal/article/view/1471.