Elja Arjas, Tapani Lehtonen. Approximating Many Server Queues by Means of Single Server Queues. Math. Oper. Res., 3(3):205-223, 1978. [doi]
@article{ArjasL78, title = {Approximating Many Server Queues by Means of Single Server Queues}, author = {Elja Arjas and Tapani Lehtonen}, year = {1978}, doi = {10.1287/moor.3.3.205}, url = {http://dx.doi.org/10.1287/moor.3.3.205}, researchr = {https://researchr.org/publication/ArjasL78}, cites = {0}, citedby = {0}, journal = {Math. Oper. Res.}, volume = {3}, number = {3}, pages = {205-223}, }