PARKHI, R. S. Trend in the Use of Connecting Digits. Journal of Information and Knowledge, [S. l.], v. 5, n. 3, p. 217–229, 1968. DOI: 10.17821/srels/1968/v5i3/49196. Disponível em: https://srels.org/index.php/sjim/article/view/49196. Acesso em: 8 jan. 2025.