Barzel, B. & Biehler, R. (2017). Design principles and domains of knowledge for the professionalization of teachers and facilitators - Two examples from the DZLM for upper secondary teachers. In S. Zehetmeier, B. Rösken-Winter, D. Potari & M. Ribeiro (Hrsg.), Proceedings of the Third ERME Topic Conference on Mathematics Teaching, Resources and Teacher Professional Development, S. 16–34. Berlin: Humboldt-Universität zu Berlin / HAL.
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Barzel, B. & Biehler, R. (2017). Design principles and domains of knowledge for the professionalization of teachers and facilitators - Two examples from the DZLM for upper secondary teachers. In S. Zehetmeier, B. Rösken-Winter, D. Potari & M. Ribeiro (Hrsg.), Proceedings of the Third ERME Topic Conference on Mathematics Teaching, Resources and Teacher Professional Development, S. 16–34. Berlin: Humboldt-Universität zu Berlin / HAL.