@book { HeinrichMannsOpernromanDiekleineStadt,
    title = "Heinrich Manns Opernroman Die kleine Stadt",
    subtitle = "Korrespondenz der Künste im europäischen Kontext",
    author = "Monika {Lippke}",
    year = "2009",
    publisher = "Meidenbauer",
    address = ", Germany",
    url = "https://www.peterlang.com/document/1107475"
}