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Peter Brusilovsky
University of Pittsburgh
Christoph Peylo
University of Pittsburgh
International Journal of Artificial Intelligence in Education
University of Pittsburgh
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Brusilovsky et al. (Thu,) studied this question.
synapsesocial.com/papers/6a0f341a14089a5783bdd7d5 — DOI: https://doi.org/10.3233/irg-2003-13(2-4)02