MANNING, P. Electronic Music Systems: Their History and Future. Contact: A Journal for Contemporary Music (1971-1990), [S. l.], n. 7, 1974. DOI: 10.25602/GOLD.cj.v0i7.920. Disponível em: https://journals.gold.ac.uk/index.php/contactjournal/article/view/contactjournal07_p3-7. Acesso em: 29 apr. 2024.