PRALLS, E. Proportioning ball loading in tube mills to reduce power costs. Materiales de Construcción, [S. l.], v. 1, n. 020, p. 13–14, 1951. DOI: 10.3989/mc.1951.v01.i020.2775. Disponível em: https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/2775. Acesso em: 1 may. 2024.