JEFFREYS, C. Johannes de Grocheio, the Ars musice and the Transformation of Chant Theory in the Late Thirteenth Century. Journal of Music Research Online, [S. l.], v. 9, 2022. Disponível em: https://www.jmro.org.au/jmro3/index.php/main/article/view/31. Acesso em: 27 jul. 2025.