Interview by Iara Lee for the film Modulations http://www.furious.com/perfect/stockhauseninterview.html (August 1997)
Attributed
Karlheinz Stockhausen: Citáty v angličtine
http://www.paulcarey.net/Quotes.htm http://www.stockhausen.org/licht_by_malcolm_ball.html
http://www.ubu.com/film/stockhausen_tuning.html
Tuning In (1981) BBC documentary on Stockhausen.
Attributed