@book { BenchmarkinginUnternehmen,
    title = "Benchmarking in Unternehmen",
    author = "Alexander {Lindenbach}",
    year = "2008",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638047722",
    url = "https://www.hausarbeiten.de/document/90487"
}