@book { BenchmarkingimMarketing,
    title = "Benchmarking im Marketing",
    subtitle = "Theoretische Grundlagen, Konzeption eines Leitfadens und praktische Anwendung",
    author = "Christine {Look}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832434328",
    url = "https://m.diplom.de/document/219101"
}