C. Wolf, and G. Gidion. INTED2017 Proceedings 11th International Technology, Education and Development Conference March 6th-8th, 2017 — Valencia, Spain. IATED, 2017, pp. 5479-5485., (2017)
C. Wolf. Motivational and Affective Aspects in Technology Enhanced Learning (MATEL). Workshop-Proceedings of MATEL Workshop 2013-2014. 26. nbn-resolving.org/urn:nbn:de:swb:90-480494, volume 26 of KIT Scientific Working Paper, page 37-47. Karlsruhe, KIT, (2015)