et. al., V. Rajam,. “Retrial Queue M^(∣x]) G C With Bernoulli’s Vacation, Repair, Service And Re-Service In Orbit”. Turkish Journal of Computer and Mathematics Education (TURCOMAT), vol. 12, no. 12, May 2021, pp. 4535-40, doi:10.17762/turcomat.v12i12.8490.