Sudipta Gayen, F. Smarandache, Sripati Jha, and Ranjan Kumar, “Introduction to Interval-valued Neutrosophic Subring”, Neutrosophic Sets Syst., vol. 36, pp. 220–245, Oct. 2020, Accessed: Jul. 16, 2024. [Online]. Available: https://fs.unm.edu/nss8/index.php/111/article/view/784