Andrawes, A., R. Nordin, and M. Ismail. “Wireless Energy Harvesting With Amplify-and-Forward Relaying and Link Adaptation under Imperfect Feedback Channel”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), vol. 10, no. 3, Aug. 2018, pp. 83-90, https://jtec.utem.edu.my/jtec/article/view/3524.