OVENS, Tim. The Sound collector – The Prepared Piano of John Cage. European Journal of Musicology, Bern, v. 6, 2003. DOI: 10.5450/ejm.2003.6.6170. Disponível em: https://bop.unibe.ch/EJM/article/view/6170. Acesso em: 13 may. 2025.