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Health Information & Libraries Journal > 33 > 1 > 84 - 88
European Journal of Open, Distance and E-Learning > 2015 > 18 > 1 > 15-33
IEEE Transactions on Learning Technologies > 2015 > 8 > 1 > 124 - 135
British Educational Research Journal > 39 > 2 > 222 - 247
Journal of Computer Assisted Learning > 27 > 3 > 204 - 215