Machado, E.C. and Pereira, A.R. 2014. Conversion efficiency and maintenance coefficient in the whole plant, roots and tops in maize and rice under aluminum stress. Pesquisa Agropecuaria Brasileira. 25, 6 (Apr. 2014), 845–855. DOI:https://doi.org/10.1590/S1678-3921.pab1990.v25.13508.