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IEEE Communications Surveys & Tutorials > 2011 > 13 > 2 > 258 - 273
2010 International Computer Symposium (ICS2010) > 547 - 552
IEEE Communications Surveys & Tutorials > 2011 > 13 > 2 > 258 - 273
2010 International Computer Symposium (ICS2010) > 547 - 552