@book { UrbanfoodproductionAcontributiontourbanresilienceinBerlin,
    title = "Urban food production: A contribution to urban resilience in Berlin?",
    author = "Lea {Baumbach}",
    year = "2013",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/229374"
}