@article{RO_1977__11_4_345_0,
     author = {Tak\'acs, Lajos},
     title = {A queuing model with feedback},
     journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
     pages = {345--354},
     publisher = {EDP-Sciences},
     volume = {11},
     number = {4},
     year = {1977},
     mrnumber = {461722},
     zbl = {0375.60106},
     language = {en},
     url = {http://www.numdam.org/item/RO_1977__11_4_345_0/}
}