@book { DerBergkranz,
    title = "Der Bergkranz",
    subtitle = "Einleitung, Übersetzung und Kommentar von A. Schmaus",
    author = "Petar II. Petrović {Njegoš,}",
    year = "1963",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b13162",
    url = "https://www.peterlang.com/document/1073561"
}