?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Nguyen%2C+Xuan+Bac&rft.aulast=Nguyen&rft.aufirst=Xuan+Bac&rft.date=2014&rft.title=Cognitive+Cellular+Femtocell+Network+Modeling+and+Simulation+for+Performance+Comparison+of+Uplink+Channel+Allocation+Schemes&rft.genre=proceeding