RANA, S. .; SAEED, M. . PCTLHS-Matrix, Time-based Level Cuts, Operators, and unified time-layer health state Model. Neutrosophic Sets and Systems, [S. l.], v. 51, p. 455-471, 2022. Disponível em: http://fs.unm.edu/NSS2/index.php/111/article/view/2578. Acesso em: 31 may. 2023.