@book { EineEinfhrungindieKoranwissenschaften,
    title = "Eine Einführung in die Koranwissenschaften",
    subtitle = "ʿUlūm al-Qurʾān",
    author = "Dorothea {Krawulsky}",
    year = "2006",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1100581"
}