@articleKoppenborg_Klingsieck_Hüffmeier_2023, title=Conjunctive and additive group work reduce academic procrastination: insights from a vignette study, DOI=10.1007/s12144-023-04294-w, journal=Current Psychology, publisher=Springer Science and Business Media LLC, author=Koppenborg, Markus and Klingsieck, Katrin B. and Hüffmeier, Joachim, year=2023 

@articleKlingsieck_2013, title=Procrastination in Different Life-Domains: Is Procrastination Domain Specific?, DOI=10.1007/s12144-013-9171-8, journal=Current Psychology, author=Klingsieck, Katrin B., year=2013, pages=175–185 

@articleKlingsieck_2013, title=Procrastination in Different Life-Domains: Is Procrastination Domain Specific?, volume=32, DOI=10.1007/s12144-013-9171-8, number=2, journal=Current Psychology, publisher=Springer Science and Business Media LLC, author=Klingsieck, Katrin B., year=2013, pages=175–185