Hungria, Mariangela, and Maria Cristina P. Neves. 2014. “Ontogeny of Biological Nitrogen Fixation in Phaseolus Vulgaris”. Pesquisa Agropecuaria Brasileira 21 (7): 715-30. https://doi.org/10.1590/S1678-3921.pab1986.v21.14878.