Mahmoud, S.A. et al. 2014. Effect of seed treatments and time of inoculation on nodulation and yield of soybeans. Pesquisa Agropecuaria Brasileira. 16, 5 (Apr. 2014), 617–621. DOI:https://doi.org/10.1590/S1678-3921.pab1981.v16.17020.