@book { ErkennenDenkenSchreiben,
    title = "Erkennen, Denken, Schreiben",
    subtitle = "Eine kleine Geschichte der Schriftlichkeit",
    author = "Gereon {Mayer}",
    year = "2009",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1107083"
}