@book { DasOrgellied,
    title = "Das Orgellied",
    subtitle = "Eine neue Gattung an der Schwelle zum 20. Jahrhundert",
    author = "Rolf {Schönsted}",
    year = "2006",
    publisher = "Meidenbauer",
    address = ", Germany",
    url = "https://www.peterlang.com/document/1102227"
}