TY - JOUR T1 - Efficient Dynamic Spectrum Sharing in Cognitive Radio Networks: Centralized Dynamic Spectrum Leasing (C-DSL) JF - IEEE Transactions on Wireless Communications Y1 - 2010 A1 - Kamrul Hakim A1 - Sudhaman K. Jayaweera A1 - Georges El-Howayek A1 - C. Mosquera VL - 9 ER -