Potter, Keith, Kathryn Lukas, Kevin Corner, and Malcolm Barry. “Brian Ferneyhough”. Contact: A Journal for Contemporary Music (1971-1990), no. 20 (September 1, 1979). Accessed November 21, 2024. https://bjmh.gold.ac.uk/index.php/contactjournal/article/view/contactjournal20_p4-15.