@book { WindPowerinChina2008,
    title = "Wind Power in China 2008",
    author = "Paul {Recknagel}",
    year = "2009",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836633383",
    url = "https://m.diplom.de/document/227079"
}