@book { FrdermglichkeitenfrBioenergie,
    title = "Fördermöglichkeiten für Bioenergie",
    author = "Numa {Sattrup}",
    year = "2008",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836621588",
    url = "https://m.diplom.de/document/226308"
}