@article{RO_1978__12_3_311_0,
     author = {Bidhi Singh, K.},
     title = {A queueing system with random additional service facility},
     journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
     pages = {311--318},
     publisher = {EDP-Sciences},
     volume = {12},
     number = {3},
     year = {1978},
     mrnumber = {494565},
     zbl = {0383.60094},
     language = {en},
     url = {http://www.numdam.org/item/RO_1978__12_3_311_0/}
}