@articleBüchele_Liebendörfer_Lankeit_2021, title=Increasing the effect of a remedial mathematics course by switching to an online format during the COVID-19 crisis: evidence from a German university, volume=40, DOI=10.1093/teamat/hrab013, number=4, journal=Teaching Mathematics and its Applications: An International Journal of the IMA, publisher=Oxford University Press (OUP), author=Büchele, Stefan and Liebendörfer, Michael and Lankeit, Elisa, year=2021, pages=478–496 

@articleKempen_Liebendörfer_2021, title=University students’ fully digital study of mathematics: an identification of student-groups via their resources usage and a characterization by personal and affective characteristics, volume=40, DOI=10.1093/teamat/hrab020, number=4, journal=Teaching Mathematics and its Applications: An International Journal of the IMA, publisher=Oxford University Press (OUP), author=Kempen, Leander and Liebendörfer, Michael, year=2021, pages=436–454 

@articleSchürmann_Gildehaus_Liebendörfer_Schaper_Biehler_Hochmuth_Kuklinski_Lankeit_2020, title=Mathematics learning support centres in Germany—an overview, volume=40, DOI=10.1093/teamat/hraa007, number=2, journal=Teaching Mathematics and its Applications: An International Journal of the IMA, publisher=Oxford University Press (OUP), author=Schürmann, Mirko and Gildehaus, Lara and Liebendörfer, Michael and Schaper, Niclas and Biehler, Rolf and Hochmuth, Reinhard and Kuklinski, Christiane and Lankeit, Elisa, year=2020, pages=99–113