@book { DieauerordentlicheKndigungdesTarifvertrages,
    title = "Die außerordentliche Kündigung des Tarifvertrages",
    author = "Christina {Gmelin-Lux}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1100874"
}