1. Art: The wild ones. (1956, February 20).Timemagazine.
2. Music I: to the late 1940s
3. Bird, B. (1993). Interview with Rebecca Boyle, Laban Center, London, 7 December. In P. Dickenson (Ed.) (2006),CageTalk: Dialogues with and about John Cage(pp. 68–80). Rochester, NY: University of Rochester Press.
4. Morton Feldman's Graphic Notation:Projectionsand Trajectories