2025. The L(2,1) Labeling of Windmill, Binomial Tree, Pan, Gear, Prism, Helm, Lilly, Hurdle, and Key Graph. Journal of Research in Mathematics Trends and Technology. 7, 2 (Sep. 2025), 78–85. DOI:https://doi.org/10.32734/jormtt.v7i2.20040.