@book { JeanEtienneLiotard,
    title = "Jean-Etienne Liotard",
    subtitle = "Erkenntnisvermögen und künstlerischer Anspruch",
    author = "Andreas {Holleczek}",
    year = "2002",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1093541"
}