Smarandache, Florentin. “Improved Definition of NonStandard Neutrosophic Logic and Introduction to Neutrosophic Hyperreals (Fifth Version)”. Neutrosophic Sets and Systems 51 (August 1, 2022): 1–20. Accessed April 10, 2025. https://fs.unm.edu/nss8/index.php/111/article/view/2551.