SUKULA, S. K. Indexing in Electronic Environment. Journal of Information and Knowledge, [S. l.], v. 44, n. 3, p. 249–254, 2007. DOI: 10.17821/srels/2007/v44i3/44228. Disponível em: https://srels.org/index.php/sjim/article/view/44228. Acesso em: 28 jul. 2025.