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Activitas Nervosa Superior > 2012 > 54 > 1-2 > 1-9
Motivation and Emotion > 2013 > 37 > 2 > 286-302
European Journal of Psychology of Education > 1998 > 13 > 4 > 543-556
Activitas Nervosa Superior > 2012 > 54 > 1-2 > 1-9
Motivation and Emotion > 2013 > 37 > 2 > 286-302
European Journal of Psychology of Education > 1998 > 13 > 4 > 543-556