BHATTACHARYYA, G. Relative Index and Chain Procedure. Journal of Information and Knowledge, [S. l.], v. 8, n. 4, p. 369–381, 1971. DOI: 10.17821/srels/1971/v8i4/49189. Disponível em: https://srels.org/index.php/sjim/article/view/49189. Acesso em: 13 jul. 2025.