@book { ManiMatterunddieLiedermacher,
    title = "Mani Matter und die Liedermacher",
    subtitle = "Zum Begriff des ‘Liedermachers’ und zu Matters Kunst des Autoren-Liedes",
    author = "Stephan {Hammer}",
    year = "2010",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1135986"
}