@book { UndamMorgenFreude,
    title = "«Und am Morgen Freude»",
    author = "Karin {Lange}",
    year = "2010",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-00339-0",
    url = "https://www.peterlang.com/document/1054247"
}