@book { ZumInfostandvonkoKufernimSupermarkt,
    title = "Zum Infostand von Öko-Käufern im Supermarkt",
    author = "Christine {Volk-Uhlmann}",
    year = "2000",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832421083",
    url = "https://m.diplom.de/document/217942"
}