Ingham, Steve. “Electro-Acoustic Music: Towards the Fifth Decade”. Contact: A Journal for Contemporary Music (1971-1990), no. 33 (September 1, 1988). Accessed December 4, 2024. https://gold07a0101.cs.ulcc.ac.uk/index.php/contactjournal/article/view/contactjournal33_p24-26.