@book { RechnergesttzteSystemeinderrumlichenPlanung,
    title = "Rechnergestützte Systeme in der räumlichen Planung",
    author = "Andreas {Neubauer}",
    year = "1999",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/217145"
}