KANBUR, M. M. From Octave to Sector Notation in CC. Journal of Information and Knowledge, [S. l.], v. 5, n. 2, p. 134–151, 1968. DOI: 10.17821/srels/1968/v5i2/49188. Disponível em: https://srels.org/index.php/sjim/article/view/49188. Acesso em: 8 jan. 2025.