Siqueira, J. O., D. H. Hubbell, and R. R. Valle. 2014. “Effects of Phosphorus on Formation of the Vesicular-Arbuscular Mycorrhizal Symbiosis”. Pesquisa Agropecuaria Brasileira 19 (12):1465-74. https://doi.org/10.1590/S1678-3921.pab1984.v19.16241.