SHEPHERD, J. Review of Recordings from the 21st International Festival of Contemporary Music, Warsaw, September 1977. Contact: A Journal for Contemporary Music (1971-1990), [S. l.], n. 20, 1979. DOI: 10.25602/GOLD.cj.v0i20.1140. Disponível em: https://journals.gold.ac.uk/index.php/contactjournal/article/view/contactjournal20_p35-36. Acesso em: 24 feb. 2024.