@article{Lin2011Optimal, <br>
&nbsp;&nbsp;&nbsp; author = {R.Lin and Wen-De Zhong and S. K. Bose and M. 
Zukerman},<br>
&nbsp;&nbsp;&nbsp; title = {Optimal Design of {WDM} Networks with Multicast 
Traffic Grooming},<br>
&nbsp;&nbsp;&nbsp; journal = {IEEE/OSA Journal of Lightwave Technology},<br>
&nbsp;&nbsp;&nbsp; volume = {29},<br>
&nbsp;&nbsp;&nbsp; number = {16},<br>
&nbsp;&nbsp;&nbsp; pages = {2337–2349},<br>
&nbsp;&nbsp;&nbsp; month = {Aug.},<br>
&nbsp;&nbsp;&nbsp; year = {2011} <br>
}