Kumar, B. Krishna, A. Thanikachalam, R. Navaneetha Krishnan, and R. Sankar. 2024. “Oscillating Service System Between Conventional and Retrial Queues for Impatient Customers With Switch-off and Close-down Periods”. Statistica 83 (1):81-122. https://doi.org/10.6092/issn.1973-2201/14206.