@book { DerEinsatzvonDatabaseMarketingundComputerAidedSellingundderenIntegrationzumCustomerRelationshipManagementbeiBanken,
    title = "Der Einsatz von Database Marketing und Computer Aided Selling und deren Integration zum Customer Relationship Management bei Banken",
    author = "Martin {Beck}",
    year = "1999",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832419011",
    url = "https://m.diplom.de/document/217749"
}