SNOJ, J. The climacus in the Breviarium notatum Strigoniense and the Gregorian modality. De musica disserenda, Ljubljana, Slovenija, v. 5, n. 1, p. 137–151, 2015. DOI: 10.3986/dmd05.1.09. Disponível em: https://ojs.zrc-sazu.si/dmd/article/view/2076. Acesso em: 6 dec. 2025.