@book { DieEnergieeinsparverordnung2007,
    title = "Die Energieeinsparverordnung 2007",
    author = "Christoph {Rohde}",
    year = "2008",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836611077",
    url = "https://m.diplom.de/document/225669"
}