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Gareth Jones (talk | contribs) →Model definition: rm 'queue' |
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Various approximations for the average queue size,<ref>{{cite doi|10.1287/opre.43.1.158}}</ref> stationary distribution<ref>{{cite doi|10.1007/s11134-008-9073-x}}</ref><ref>{{cite jstor|169760}}</ref> and approximation by a [[reflected Brownian motion]]<ref>{{cite doi|10.1287/opre.31.2.304}}</ref><ref name="yao">{{cite doi|10.1287/opre.33.6.1266}}</ref> have been offered by different authors
==Average
There are numerous approximations for the average delay a job experiences.<ref>{{cite jstor|169760}}</ref><ref>{{cite jstor|1426432}}</ref><ref>{{cite jstor|3212698}}</ref><ref>{{cite jstor|3213437}}</ref><ref>{{cite jstor|172087}}</ref><ref name="yao" /> The first such was given in 1959 using a factor to adjust the mean waiting time in an [[M/M/c queue]]<ref name="gbdz" /><ref>{{cite doi|10.1057/jors.1959.5}}</ref>
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