@book { HeinrichHeinesLyrischesIntermezzoinVertonungenvonRobertSchumannundRobertFranz,
    title = "Heinrich Heines «Lyrisches Intermezzo» in Vertonungen von Robert Schumann und Robert Franz",
    author = "Adam {Smykowski}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1091249"
}