@book { FranchisingDieExpansionvonUnternehmen,
    title = "Franchising. Die Expansion von Unternehmen",
    author = "Ronny {Peterhans}",
    year = "2001",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640001316",
    url = "https://www.hausarbeiten.de/document/101718"
}