Rios, G.P. and Dobereiner, J. 2014. The effects of soybean variety and inoculants on the physiology of nodulation under field conditions. Pesquisa Agropecuaria Brasileira. 7, 6 (Apr. 2014), 123–127. DOI:https://doi.org/10.1590/S1678-3921.pab1972.v7.17369.