References
Uwe Gellert
Educational research on mathematics: a short survey of its development in German speaking countries
2019
with Hefendehl-Hebeker Lisa, Leuders Timo
in: Traditions in German-speaking mathematics education research, Dordrecht : Springer
Classroom studies—sociological perspectives
2019
with Krummheuer Götz
in: Traditions in German-speaking mathematics education research, Dordrecht : Springer