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IEEE Transactions on Education > 2008 > 51 > 3 > 378 - 384
IEEE Transactions on Wireless Communications > 2007 > 6 > 11 > 4025 - 4037
IEEE Transactions on Education > 2008 > 51 > 3 > 378 - 384
IEEE Transactions on Wireless Communications > 2007 > 6 > 11 > 4025 - 4037