Cage, J. (2003) “Cage-Interview Nr. 3 / No. 3.; Almeida Contemporary Festival, London, 1990; Various afternoon and evening moments, Almeida Bar, 19/6/90; Sweeney-Turner im Gespräch mit John Cage”, European Journal of Musicology, 6. doi: 10.5450/ejm.2003.6.6179.