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IEEE Transactions on Education > 2015 > 58 > 3 > 208 - 213
Fundamenta Informaticae > 2013 > Vol. 126, nr 2-3 > 121--156
IEEE Transactions on Education > 2015 > 58 > 3 > 208 - 213
Fundamenta Informaticae > 2013 > Vol. 126, nr 2-3 > 121--156