Accioly, Adriana Maria de Aguiar, et al. “Steel Industry Furnace Residue As a Source of Micronutrients and Contaminants to Corn Plant”. Pesquisa Agropecuaria Brasileira, vol. 35, no. 7, July 2000, pp. 1483-91, doi:10.1590/S1678-3921.pab2000.v35.5915.