@book {9783967073720, 
	title = "John Cage I",
	isbn = "9783967073720",
	year = "1990",
	edition = "2",
	keywords = "John, Cage",
	url = "http://www.content-select.com/index.php?id=bib_view&ean=9783967073720",
	url = "https://content-select.com/de/portal/media/view/5e64fa76-a5c0-474e-8233-22b4b0dd2d03",
	publisher = "edition text+kritik",
	language = "ger",
}