@book { SymphonyofDisruptionGeschftsmodelleundInnovationeninderdigitalenWelt,
    title = "Symphony of Disruption: Geschäftsmodelle und Innovationen in der digitalen Welt",
    author = "Jochen {Kressin}",
    year = "2012",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656291510",
    url = "https://www.hausarbeiten.de/document/199704"
}