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2013
Kaiser, Gabriele 
ORCID: 0000-0002-6239-0169, Benthien, J., Döhrmann, Martina and König, Johannes ORCID: 0000-0003-3374-9408
(2013).
Expert Ratings as an Instrument for Validating Results of Video-Based Testing.
In:
Proceedings of the 37th Conference of the International Group for the Psychology of Mathematics Education PME in Kiel/Germany,
p. 83.
PME.
ISBN 978-3-89088-287-1
