VAN KAMPEN, Dirk. A Historical and Statistical View on Old-Roman, Gallican, and Gregorian Chant. Journal of Music Theory and Transcultural Music Studies, [S. l.], v. 3, n. 2, p. 79–90, 2025. Disponível em: https://jmttms.com/index.php/jmmtms/article/view/30.. Acesso em: 3 dec. 2025.