@book { RegionaleEnergiewende,
    title = "Regionale Energiewende",
    author = "Kathrin {Müller}",
    year = "2014",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-03969-6",
    url = "https://www.peterlang.com/document/1048234"
}