P. Chellamani and D. Ajay, “Irregular Pythagorean Neutrosophic Graphs ”, Neutrosophic Sets Syst., vol. 96, pp. 321–331, Feb. 2026, Accessed: Jun. 09, 2026. [Online]. Available: https://fs.unm.edu/nss8/index.php/111/article/view/7273