@book { DasIntegrierteEnergieundKlimaprogrammderGroenKoalition,
    title = "Das Integrierte Energie- und Klimaprogramm der Großen Koalition",
    author = "Julia {Hierl}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1108201"
}