@book { DieEnergiepolitikdesLandesBadenWrttemberg,
    title = "Die Energiepolitik des Landes Baden-Württemberg",
    author = "Johannes {Stekeler}",
    year = "2013",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656547365",
    url = "https://www.hausarbeiten.de/document/265127"
}