@book { StrategieneinerdezentralenEnergieversorgungaufBasisregenerativerEnergiequellen,
    title = "Strategien einer dezentralen Energieversorgung auf Basis regenerativer Energiequellen",
    author = "Florian {Witzler}",
    year = "2011",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783842814042",
    url = "https://m.diplom.de/document/228274"
}