@article {HakimJayaweeraHowayekMosqueraTWC2010, title = {Efficient Dynamic Spectrum Sharing in Cognitive Radio Networks: Centralized Dynamic Spectrum Leasing (C-DSL)}, journal = {IEEE Transactions on Wireless Communications}, volume = {9}, number = {9}, year = {2010}, pages = {2956-2967}, author = {Kamrul Hakim and Sudhaman K. Jayaweera and Georges El-Howayek and C. Mosquera} }