YOHAPRIYADHARSINI, R.S.; SUVITHA, V. Multi-Server Markovian Heterogeneous Arrivals Queue With Two Kinds of Working Vacations and Impatient Customers. Yugoslav Journal of Operations Research, [S. l.], v. 33, n. 4, p. 643–666, 2023. DOI: 10.2298/YJOR221117011Y. Disponível em: https://yujor.erc.fon.bg.ac.rs/index.php/yujor/article/view/761. Acesso em: 15 dec. 2025.