@book { GoetheundDiez,
    title = "Goethe und Diez",
    subtitle = "Quellenuntersuchungen zu Gedichten der Divan-Epoche",
    author = "Katharina {Mommsen}",
    year = "1995",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1117031"
}