@incollection{Addie1991Teletraffic,<br>
&nbsp;&nbsp;&nbsp; author = {R. G. Addie and M. Zukerman},<br>
&nbsp;&nbsp;&nbsp; title = {An approximate solution of a semi-{Markov} queue 
with large state space},<br>
&nbsp;&nbsp;&nbsp; booktitle = {Teletraffic and Datatraffic in a Period of Change},<br>
&nbsp;&nbsp;&nbsp; editor = {A. Jensen and V. B. Iversen},<br>
&nbsp;&nbsp;&nbsp; address = {Amsterdam, Netherlands},<br>
&nbsp;&nbsp;&nbsp; publisher = {North-Holland Elsevier Science},<br>
&nbsp;&nbsp;&nbsp; year = {1991},<br>
&nbsp;&nbsp;&nbsp; volume ={},<br>
&nbsp;&nbsp;&nbsp; chapter = {},<br>
&nbsp;&nbsp;&nbsp; type = {},<br>
&nbsp;&nbsp;&nbsp; pages = {689-694},<br>
&nbsp;&nbsp;&nbsp; note = {}<br>
}