@book { NachhaltigesBauenundHeizen,
    title = "Nachhaltiges Bauen und Heizen",
    author = "Bernd {Faninger}",
    year = "2002",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832451929",
    url = "https://m.diplom.de/document/220719"
}