@book { Derivativesasaninstrumentoffinancialmanagementininternationalcompanies,
    title = "Derivatives as an instrument of financial management in international companies",
    author = "Kateryna {Troyanska}",
    year = "2004",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832476489",
    url = "https://m.diplom.de/document/222922"
}