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IEEE Communications Surveys & Tutorials > 2016 > 18 > 2 > 1453 - 1499
Eurocon 2013 > 687 - 693
IEEE Transactions on Microwave Theory and Techniques > 2013 > 61 > 3 > 1359 - 1375
IEEE Journal of Selected Topics in Quantum Electronics > 2013 > 19 > 2 > 290 - 298