1. Barrows, H. S. (1986). A taxonomy of problem-based learning methods. Medical Education, 20(6), 481–486.
2. Beck, K. (1996). Die Situation als Bezugspunkt didaktischer Argumentationen. Ein Beitrag zur Begriffspräzisierung. In W. Seyd & R. Witt (Eds.), Situation, Handlung, Persönlichkeit. Kategorien wirtschaftspädagogischen Denkens. Festschrift für Lothar Reetz (pp. 87–96). Hamburg: Feldhaus.
3. Blömeke, S., Felbrich, A., Müller, C., Kaiser, G., & Lehmann, R. (2008). Effectiveness of teacher education. ZDM Mathematics Education, 40(5), 719–734.
4. Bronkhorst, L. H., & Akkerman, S. F. (2016). At the boundary of school: Continuity and discontinuity in learning across contexts. Educational Research Review, 19, 18–35. https://doi.org/10.1016/j.edurev.2016.04.001 .
5. CEDEFOP glossary. (2008). Terminology of European education and training policy: A selection of 100 key terms. Luxembourg: Office for Official Publications of the European Communities.