Smarandache, Florentin. “Foundation of Appurtenance and Inclusion Equations for Constructing the Operations of Neutrosophic Numbers Needed in Neutrosophic Statistics”. Neutrosophic Systems with Applications 15 (January 26, 2024): 16–32. Accessed April 7, 2025. https://sciencesforce.com/index.php/nswa/article/view/190.