@book { DaskapitalmarkttheoretischeKonzeptdesrationalenInvestors,
    title = "Das kapitalmarkttheoretische Konzept des rationalen Investors",
    author = "Christel {Bauer}",
    year = "2005",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832489496",
    url = "https://m.diplom.de/document/224110"
}