@book { DerWegzuneuenGsten,
    title = "Der Weg zu neuen Gästen",
    author = "Jörg {Matthiessen}",
    year = "2007",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836603973",
    url = "https://m.diplom.de/document/228925"
}