Amaresh Chandra Panda and Debdas Mishra. Study on Harmonious Labeling of Symmetrical Trees of Diameter Four. CTMCS-V3 [Internet]. 2021 Jun. 29 [cited 2026 Jun. 4];:1-5. Available from: https://stm.bookpi.org/CTMCS-V3/article/view/2041