@book { VerdichterfrErdgastankstellen,
    title = "Verdichter für Erdgastankstellen",
    author = "Axel {zur Strassen}",
    year = "1998",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832407704",
    url = "https://m.diplom.de/document/216677"
}