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Research and Practice in Technology Enhanced Learning > 2018 > 13 > 1 > 1-29
Education and Information Technologies > 2015 > 20 > 4 > 697-713
EURO Journal on Decision Processes > 2014 > 2 > 3-4 > 257-280
Learning and Instruction > 2011 > 21 > 3 > 441-451