@book { ErschwerteLektren,
    title = "Erschwerte Lektüren",
    author = "Helke {Kuhn} and Beatrice {Nickel}",
    year = "2014",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-04321-1",
    url = "https://www.peterlang.com/document/1048512"
}