@book { Kohrenz,
    title = "Kohärenz",
    subtitle = "Eine Untersuchung an Texten aus Klasse 1",
    author = "Kerstin {Schulte}",
    year = "2000",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1090412"
}