@book { AlternativeFinanzierungsformenfrdendeutschenMittelstand,
    title = "Alternative Finanzierungsformen für den deutschen Mittelstand",
    author = "Andreas {Dengler}",
    year = "2003",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638201964",
    url = "https://www.hausarbeiten.de/document/14922"
}