@book { RechtlicheGrenzendesFranchising,
    title = "Rechtliche Grenzen des Franchising",
    author = "Mathias {Fritzsche}",
    year = "1999",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832419813",
    url = "https://m.diplom.de/document/217824"
}