@book { InflationDefinitionUrsachenArten,
    title = "Inflation: Definition, Ursachen, Arten",
    author = "Iryna {Kopiyevska}",
    year = "2015",
    publisher = "BACHELOR + MASTER PUBLISHING",
    address = "Hamburg, Deutschland",
    url = "https://m.bachelor-master-publishing.de/document/297951"
}