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IEEE Transactions on Learning Technologies > 2017 > 10 > 2 > 205 - 218
IEEE Latin America Transactions > 2017 > 15 > 4 > 711 - 719
IEEE Transactions on Learning Technologies > 2017 > 10 > 2 > 205 - 218
IEEE Latin America Transactions > 2017 > 15 > 4 > 711 - 719