@book { EntsorgungsautarkieundVerursacherprinzip,
    title = "Entsorgungsautarkie und Verursacherprinzip",
    author = "Christina {Sagia}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1094424"
}