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IEEE Transactions on Education > 2011 > 54 > 2 > 273 - 278
IEEE Software > 2009 > 26 > 5 > 54 - 57
IEEE Transactions on Education > 2009 > 52 > 3 > 413 - 424
IEEE Transactions on Education > 2011 > 54 > 2 > 273 - 278
IEEE Software > 2009 > 26 > 5 > 54 - 57
IEEE Transactions on Education > 2009 > 52 > 3 > 413 - 424