GAO, H.; LYNCH, M. A. M. A new model approximating M/PH/1 queuing systems during the transient period. Mathematical Modelling and Analysis, [S. l.], v. 6, n. 2, p. 199–209, 2001. DOI: 10.3846/13926292.2001.9637159. Disponível em: https://journals.vilniustech.lt/index.php/MMA/article/view/9899. Acesso em: 17 may. 2025.