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, (Jun. 2003). DOI:https://doi.org/10.5450/ejm.2003.6.6179.