SOM, Bhupender Kumar; 						SETH, Sunny.
 M/M/c/N QUEUING SYSTEMS WITH ENCOURAGED ARRIVALS, RENEGING, RETENTION AND FEEDBACK CUSTOMERS.
<strong>Yugoslav Journal of Operations Research</strong>, [S.l.], v. 28, n. 3, p. 333–344, mar. 2018.
ISSN 2334-6043.
Available at: &lt;<a href="https://yujor.fon.bg.ac.rs/index.php/yujor/article/view/536" target="_new">https://yujor.fon.bg.ac.rs/index.php/yujor/article/view/536</a>&gt;. Date accessed: 15 jan. 2025.