Ball, Andrew, Ivan Moody, and James Ingram. “Controversies Incorporated: Bridging That Gap; The Mystic’s Point of View; The Notation of Time: A Reaction to Richard Barrett’s Reply”. Contact: A Journal for Contemporary Music (1971-1990), no. 31 (September 1, 1987). Accessed May 27, 2024. https://bjmh.gold.ac.uk/index.php/contactjournal/article/view/contactjournal31_p27-30.