@book { DerVerbandswechseldesArbeitgebers,
    title = "Der Verbandswechsel des Arbeitgebers",
    author = "Katrin {Haussmann}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1085587"
}