@book { ComputerbasierteLehrLernArrangements,
    title = "Computerbasierte Lehr-Lern-Arrangements",
    author = "Stefan {Staiger}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1097576"
}