Shanmugapriya, N. “Independent Vertices Inserted Graph of Grid and Leftmost Child Joined Graph of a Subdivided Extreme-Sides Leave Tree Are Graceful”. The Journal of the Indian Mathematical Society 90, no. 3-4 (July 12, 2023): 249–262. Accessed November 7, 2024. https://informaticsjournals.co.in/index.php/jims/article/view/34193.