@book { EconomicAnalysisandEvaluationoftheGulfCooperationCouncilGCC,
    title = "Economic Analysis and Evaluation of the Gulf Cooperation Council (GCC)",
    subtitle = "Second Edition",
    author = "Simon {Koppers}",
    year = "2004",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1095247"
}