BUTCHER, W. S. Water Resources Information Services. Journal of Information and Knowledge, [S. l.], v. 14, n. 2, p. 95–98, 1977. DOI: 10.17821/srels/1977/v14i2/50532. Disponível em: https://srels.org/index.php/sjim/article/view/50532. Acesso em: 8 jan. 2025.