Laycock, Jolyon. “Review of 1971/11/19 Concert at Barber Institute of Fine Arts (University of Birmingham) ‘Bell Piece ’71’ by Annea Lockwood and David Jones”. Contact: A Journal for Contemporary Music (1971-1990), no. 4 (March 1, 1972). Accessed November 24, 2024. https://gold07a0101.cs.ulcc.ac.uk/index.php/contactjournal/article/view/contactjournal04_p23-24.