Galletti, Pedro, et al. “Effects of Excessive Soil Temperatures in the Symbiosis of Soybean (<i>Glycine max< I> L. Merril)”. Pesquisa Agropecuaria Brasileira, vol. 6, no. 1, Apr. 2014, pp. 1-8, doi:10.1590/S1678-3921.pab1971.v6.17463.