@book { PainStreamRecords,
    title = "PainStream Records",
    subtitle = "Business-Plan für eine Independent-Plattenfirma",
    author = "Jens {Krüger}",
    year = "2005",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832487188",
    url = "https://m.diplom.de/document/223867"
}