Buck, Graham. “Experimental Music Catalogue: Eddie Prévost: Spirals and Richard Reason: Games for Musicians”. Contact: A Journal for Contemporary Music (1971-1990), no. 7 (January 1, 1974). Accessed November 24, 2024. https://ojs.gold.ac.uk/index.php/contactjournal/article/view/contactjournal07_p27-29.