GOPINATH, M. A. Screw in CC and UDC. Journal of Information and Knowledge, [S. l.], v. 1, n. 1, p. 58–61, 2014. DOI: 10.17821/srels/1964/v1i1/38456. Disponível em: https://srels.org/index.php/sjim/article/view/38456. Acesso em: 9 apr. 2025.