* Halverscheid, S. & [[Katrin Rolka|Rolka, K.]] (2011). Researching young students' mathematical world views. In [[ZDM]] 43 (4), S. 521 - 533. Berlin Heidelberg: Springer-Verlag. | * Halverscheid, S. & [[Katrin Rolka|Rolka, K.]] (2011). Researching young students' mathematical world views. In [[ZDM]] 43 (4), S. 521 - 533. Berlin Heidelberg: Springer-Verlag. |