BRACEFIELD, H. Groping Towards Gruppen. Contact: A Journal for Contemporary Music (1971-1990), [S. l.], n. 27, 1983. DOI: 10.25602/GOLD.cj.v0i27.1246. Disponível em: https://goldojs-prod.leaf.cosector.com/index.php/contactjournal/article/view/contactjournal27_p49-50. Acesso em: 25 nov. 2024.