GUPTA, R. Cost Optimization of Queueing System with Working Vacation, Setup, Feedback, Reneging, and Retention of Reneged Customers. Journal of Scientific Research, [S. l.], v. 14, n. 1, p. 257–268, 2022. DOI: 10.3329/jsr.v14i1.55075. Disponível em: https://banglajol.info/index.php/JSR/article/view/55075. Acesso em: 31 aug. 2024.