@book { DerKrankenstandbeiLehrkrften,
    title = "Der Krankenstand bei Lehrkräften",
    author = "Tanja {Reinke}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1103339"
}