@book { PositioningandOpportunityAssessmentReportwithmainfocusonGermanyChinaUSANewZealand,
    title = "Positioning and Opportunity Assessment Report with main focus on Germany, China, USA, New Zealand",
    author = "Letizia {Zisa}",
    year = "2011",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640914173",
    url = "https://www.hausarbeiten.de/document/171404"
}