@book { EinekleineGeschichtedesdeutschenSchulbaus,
    title = "Eine kleine Geschichte des deutschen Schulbaus",
    author = "Michael {Luley}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1091443"
}