@book { HansWernerHenze,
    title = "Hans Werner Henze",
    subtitle = "Die Vorträge des internationalen Henze-Symposions am Musikwissenschaftlichen Institut der Universität Hamburg- 28. bis 30. Juni 2001",
    author = "Peter {Petersen}",
    year = "2003",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1095958"
}