@article{10_14708_ma_v4i7_1197,
     author = {D. Czerwi\'nska},
     title = {Queueing systems with priorities.},
     journal = {Mathematica Applicanda},
     pages = { 5--69},
     publisher = {mathdoc},
     volume = {4},
     number = {7},
     year = {1976},
     doi = {10.14708/ma.v4i7.1197},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/ma.v4i7.1197/}
}