D. Nagarajan, J.Kavikumar, Mary Tom, Mufti Mahmud, S.Broumi. Modelling the progression of Alzheimer’s disease using Neutrosophic hidden Markov models. Neutrosophic Sets Syst. 2023;56:31-40. Accessed July 16, 2024. https://fs.unm.edu/nss8/index.php/111/article/view/3147