@book { DiehergebrachtenGrundstzedesBerufsbeamtentums,
    title = "Die hergebrachten Grundsätze des Berufsbeamtentums",
    author = "Ferdinand {Krause}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1104784"
}