Franco, Avílio Antonio, and Johanna Döbereiner. 2014. “Manganese Toxicity in an Acid Soil Affecting the Soybean-Rhizobium Symbiosis”. Pesquisa Agropecuaria Brasileira 6 (1): 57-66. https://doi.org/10.1590/S1678-3921.pab1971.v6.17618.