@article{TVP_1973_18_4_a21,
     author = {E. A. Danielyan and G. A. Ivanov},
     title = {On the queue length in priority queueing systems},
     journal = {Teori\^a vero\^atnostej i ee primeneni\^a},
     pages = {859--861},
     publisher = {mathdoc},
     volume = {18},
     number = {4},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TVP_1973_18_4_a21/}
}