Waugh, Jane, and W.A.O’N. Waugh. “Xenakis and Chance”. Contact: A Journal for Contemporary Music (1971-1990), no. 10 (January 1, 1975). Accessed August 3, 2025. https://gold-ojs-prod.gold-eprints.cdl.cosector.com/index.php/contactjournal/article/view/contactjournal10_p6-13.