NELSON, Kathleen E. Semitone Indication in a Twelfth-Century Source of Aquitanian Notation in Zamora. Revista Portuguesa de Musicologia, [S. l.], p. 7–24, 2014. DOI: 10.57885/rpmns.210. Disponível em: https://rpm-ns.pt/index.php/rpm/article/view/210. Acesso em: 16 abr. 2026.