@book { FrdieSchulenichtmehrzumutbar,
    title = "Für die Schule nicht mehr zumutbar",
    author = "Werner {Hürlimann}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1102554"
}