@book { SymbolischesVerstehen,
    title = "Symbolisches Verstehen",
    subtitle = "Beiträge zur angewandten Kunstpsychologie",
    author = "Georg {Franzen}",
    year = "2004",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1097018"
}