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IEEE Transactions on Mobile Computing > 2012 > 11 > 2 > 264 - 277
IEEE Transactions on Mobile Computing > 2011 > 10 > 3 > 349 - 361
IEEE Wireless Communications > 2011 > 18 > 1 > 74 - 81
2010 2nd International Conference on Education Technology and Computer > 5 > V5-298 - V5-303