@book { EinsatzpotentialevonCrowdsourcingundOpenInnovationfrdasCustomerExperienceManagement,
    title = "Einsatzpotentiale von Crowdsourcing und Open Innovation für das Customer Experience Management",
    author = "Christian {Lang}",
    year = "2011",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640831296",
    url = "https://www.hausarbeiten.de/document/166793"
}