@book { ErhaltendurchGestalten,
    title = "Erhalten durch Gestalten",
    author = "Adelheid {Biesecker} and Wolfram {Elsner}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1099392"
}