@book { DiemusikkritischenSchriftenRobertSchumanns,
    title = "Die musikkritischen Schriften Robert Schumanns",
    author = "Hans-Peter {Fricker}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1070750"
}