E. . AboElHamd, M. . Abdel-Basset, H. M. . Shamma, M. . Saleh, and I. . El-Khodary, “Modeling Customer Lifetime Value Under Uncertain Environment”., Neutrosophic Sets Syst., vol. 39, pp. 10–30, Jan. 2021, Accessed: Apr. 25, 2025. [Online]. Available: https://fs.unm.edu/nss8/index.php/111/article/view/1212