@book { BerlinBrandenburgerBeitrgezurBildungsforschung2015,
    title = "Berlin-Brandenburger Beiträge zur Bildungsforschung 2015",
    author = "Jurik {Stiller} and Christin {Laschke}",
    year = "2015",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-04961-9",
    url = "https://www.peterlang.com/document/1048940"
}