@book { Acriticalanalysisofthe20072009globalfinancialandeconomiccrisisanditsimplicationsforthetravelindustryandassociatedbusinesses,
    title = "A critical analysis of the 2007-2009 global financial and economic crisis and its implications for the travel industry and associated businesses",
    author = "Manuel {Kaar}",
    year = "2009",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836635455",
    url = "https://m.diplom.de/document/227177"
}