@book { BeteiligungscontrollingeinesEarlyStageInvestors,
    title = "Beteiligungscontrolling eines Early Stage Investors",
    author = "Benjamin {Rassler}",
    year = "2011",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783842809673",
    url = "https://m.diplom.de/document/228260"
}