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IEEE Communications Surveys & Tutorials > 2016 > 18 > 4 > 2662 - 2686
IEEE Transactions on Microwave Theory and Techniques > 2010 > 58 > 1 > 9 - 20
IEEE Communications Surveys & Tutorials > 2016 > 18 > 4 > 2662 - 2686
IEEE Transactions on Microwave Theory and Techniques > 2010 > 58 > 1 > 9 - 20