Campêlo, Adalis Bezerra, and Johanna Döbereiner. “Occurrence of Derxia Sp. In Some Brazilian Soils”. Pesquisa Agropecuaria Brasileira, vol. 5, no. 1, Apr. 2014, pp. 227-32, doi:10.1590/S1678-3921.pab1970.v5.17695.