@articleBruns_Gasteiger_Strahl_2021, title=Conceptualising and measuring domain-specific content knowledge of early childhood educators: A systematic review, volume=9, DOI=10.1002/rev3.3255, number=2, journal=Review of Education, publisher=Wiley, author=Bruns, Julia and Gasteiger, Hedwig and Strahl, Carolin, year=2021, pages=500–538