@book { BiomassealsgrundlastfhigeerneuerbareEnergieform,
    title = "Biomasse als grundlastfähige erneuerbare Energieform",
    author = "Patrick {Renger}",
    year = "2009",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836631976",
    url = "https://m.diplom.de/document/226988"
}