Aquino, S. da S. and Cassiolato, A.M.R. (2002) “Contribution of arbuscular mycorrhizal fungi to the growth of Guazuma ulmifolia in degraded ’cerrado’ soil”, Pesquisa Agropecuaria Brasileira, 37(12), pp. 1819–1823. doi:10.1590/S1678-3921.pab2002.v37.6536.