@book { AbbaubareKunststoffe,
    title = "Abbaubare Kunststoffe",
    author = "Sigrid {Kusch}",
    year = "2003",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638187497",
    url = "https://www.hausarbeiten.de/document/12983"
}