@book { SoziokonomischeEntwicklungundkologie,
    title = "Sozio-ökonomische Entwicklung und Ökologie",
    author = "Bernd {Waldmüller}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1089519"
}