@book { EthischeAspektedesInvestments,
    title = "Ethische Aspekte des Investments",
    author = "Ansgar {Ernst}",
    year = "2003",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638165617",
    url = "https://www.hausarbeiten.de/document/9995"
}