@book { kotopia,
    title = "Ökotopia",
    author = "Bernhard {Plé} and Martin {Schloffer} and Marion Alexandra {Würz-Stalder}",
    year = "2013",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-03802-6",
    url = "https://www.peterlang.com/document/1045837"
}