@book { ZwiegesprchmitdemIrrlicht,
    title = "Zwiegespräch mit dem Irrlicht",
    author = "Volker {Friebel}",
    year = "2016",
    publisher = "Edition Blaue Felder",
    address = ", Deutschland",
    url = "https://tolino.openpublishing.com/document/999543"
}