@article{RO_2021__55_S1_S2027_0,
     author = {Jain, Madhu and Kaur, Sandeep},
     title = {Bernoulli vacation model for $M^{X} / G / 1$ unreliable server retrial queue with bernoulli feedback, balking and optional service},
     journal = {RAIRO. Operations Research},
     pages = {S2027--S2053},
     year = {2021},
     publisher = {EDP-Sciences},
     volume = {55},
     doi = {10.1051/ro/2020074},
     mrnumber = {4223160},
     language = {en},
     url = {https://www.numdam.org/articles/10.1051/ro/2020074/}
}