@book { IchwillIsmaelsegnen,
    title = "«Ich will Ismael segnen»",
    subtitle = "Gemeinsame Wurzeln in Christentum und Islam",
    author = "Udo {Worschech}",
    year = "2011",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1107666"
}