@book { WertpapieranlagefrPrivatanlegerimWandel,
    title = "Wertpapieranlage für Privatanleger im Wandel",
    author = "Walter {Peterhoff}",
    year = "2000",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832423438",
    url = "https://m.diplom.de/document/218157"
}