@book { EvaluationvonGeschftsmodellenfrFinanzdienstleisterimBusinesstoBusinessElectronicCommerce,
    title = "Evaluation von Geschäftsmodellen für Finanzdienstleister im Business to Business Electronic Commerce",
    author = "André {Klöpfel}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832445980",
    url = "https://m.diplom.de/document/220214"
}