TY  - DATA
AU  - Hans Niels Jahnke
AU  -  Lisa Hefendehl-Hebeker
TI  - Traditions in GermanSpeaking Mathematics Education Research
T2  - ICME-13 Monographs
SN  - 9783030110697
PB  - Springer
UR  - https://link.springer.com/openurl?genre=book&isbn=978-3-030-11069-7
ER  -