NELSON, D. Improvised Impressions. Contact: A Journal for Contemporary Music (1971-1990), [S. l.], n. 1, 1971. DOI: 10.25602/GOLD.cj.v0i1.475. Disponível em: https://journals.gold.ac.uk/index.php/contactjournal/article/view/contactjournal01_p8-9. Acesso em: 22 apr. 2024.