@book { DasEUEmissionshandelssystemundkommunalerKlimaschutz,
    title = "Das EU-Emissionshandelssystem und kommunaler Klimaschutz",
    author = "Benjamin {Bornefeld}",
    year = "2005",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832488819",
    url = "https://m.diplom.de/document/224058"
}