@book { FLANEUR,
    title = "FLANEUR",
    author = "Matthias {Wagner} and Philipp {Hirsch}",
    year = "1998",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832407568",
    url = "https://m.diplom.de/document/216664"
}