Lee, Kuk-Ki, and Johanna Dobereiner. “Effect of Excessive Temperatures on Rhizobia Growth Nodulation and Nitrogen Fixing Activity in Symbiosis With Siratro”. Pesquisa Agropecuaria Brasileira, vol. 17, no. 2, Apr. 2014, pp. 181-4, doi:10.1590/S1678-3921.pab1982.v17.15586.