@article{RO_2004__38_3_227_0,
     author = {Wang, Kuo-Hsiung and Chen, Sheau-Chyi and Ke, Jau-Chuan},
     title = {Maximum likelihood estimates and confidence intervals of an {M/M/R/N} queue with balking and heterogeneous servers},
     journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
     pages = {227--241},
     publisher = {EDP-Sciences},
     volume = {38},
     number = {3},
     year = {2004},
     doi = {10.1051/ro:2004021},
     mrnumber = {2091754},
     zbl = {1049.60085},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1051/ro:2004021/}
}