Filho, A.C. and Cardoso, E.J.B.N. (2000) “Detection of arbuscular mycorrhizal fungi in roots of coffee plants and crotalaria cultivated between rows”, Pesquisa Agropecuaria Brasileira, 35(10), pp. 2033–2042. doi:10.1590/S1678-3921.pab2000.v35.5998.