Salama, A.A., Smarandache, F. and Alblowi, S.A. (2014) “The Characteristic Function of a Neutrosophic Set”, Neutrosophic Sets and Systems, 3, pp. 14–17. Available at: https://fs.unm.edu/nss8/index.php/111/article/view/549 (Accessed: 25 November 2024).