@book { NewTrendsinInternetMarket,
    title = "New Trends in Internet Market",
    author = "Jose Manuel {Garcia Sanchez}",
    year = "2007",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836603607",
    url = "https://m.diplom.de/document/225304"
}