@book { RechtlicheAspektedesDatabaseMarketing,
    title = "Rechtliche Aspekte des Database-Marketing",
    author = "Carmen {Jurczyk}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832433871",
    url = "https://m.diplom.de/document/219062"
}