@book { ShoppingontheSemanticWeb,
    title = "Shopping on the Semantic Web",
    author = "Anne {Müller}",
    year = "2004",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832480172",
    url = "https://m.diplom.de/document/223221"
}