@book { EnergieMenschundUmwelt,
    title = "Energie. Mensch und Umwelt",
    author = " {Gottlieb-Duttweiler-Institut}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1069445"
}