S.C. LinKWANG-CHENG CHEN2018-09-102018-09-102016-03http://scholars.lib.ntu.edu.tw/handle/123456789/398345Cognitive and Opportunistic Relay for QoS Guarantees in Machine-to-Machine Communicationsjournal article10.1109/TMC.2015.24219312-s2.0-84962082237WOS:000370761800006