@book { EinekonomischeAnalysevonFehlzeiten,
    title = "Eine ökonomische Analyse von Fehlzeiten",
    author = "Anja {Thalmaier}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1093111"
}