@book { UnbundlingimEnergiewirtschaftsrecht,
    title = "Unbundling im Energiewirtschaftsrecht",
    author = "Jan Nicolai {Hennemann}",
    year = "2007",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836606318",
    url = "https://m.diplom.de/document/225424"
}