RAMADEVI, Vedala Naga; CHANDAN, K. Optimal Strategy Analysis of Two-Phase, N-Policy of M/EK/1 Queuing System with System Break -Downs and Balking. International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 16, n. 1, p. 455–474, 2014. Disponível em: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/2250. Acesso em: 13 oct. 2025.