Volans, Kevin, and Hilary Bracefield. “A Constant State of Surprise: Gerald Barry and The Intelligence Park”. Contact: A Journal for Contemporary Music (1971-1990), no. 31 (September 1, 1987). Accessed March 28, 2024. https://journals.gold.ac.uk/index.php/contactjournal/article/view/contactjournal31_p9-19.