Madeleine Al Tahan, Bijan Davvaz, Florentin Smarandache, and Saba Al-Kaseasbeh. “Fundamental Group and Complete Parts of Neutrosophic Quadruple Hv -Groups”. Neutrosophic Sets and Systems 53 (January 1, 2023): 107–116. Accessed November 25, 2024. https://fs.unm.edu/nss8/index.php/111/article/view/3216.