BOUTARFA, Leila; DJELLAB, Natalia. On the performance of the M1,M2/G1,G2/1 retrial queue with pre-emptive resume policy. Yugoslav Journal of Operations Research, [S. l.], v. 25, n. 1, p. 153–164, 2015. DOI: 10.2298/YJOR130217001B. Disponível em: https://yujor.erc.fon.bg.ac.rs/index.php/yujor/article/view/432. Acesso em: 21 jan. 2026.