Nguyen Xuan Thao, Florentin Smarandache. (𝓘, 𝓣) −Standard neutrosophic rough set and its topologies properties. Neutrosophic Sets Syst. 2016;14:65-70. Accessed July 16, 2024. https://fs.unm.edu/nss8/index.php/111/article/view/580