@book { DrachenundRad,
    title = "Drachen und Rad",
    author = "Hellmuth {Kiowsky}",
    year = "2015",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-05366-1",
    url = "https://www.peterlang.com/document/1049035"
}