Söndahl, Maro Ran-Ir, and Luiz Gouvêa Labouriau. “Silica Bodies of Grasses from the ‘Cerrados’. IV”. Pesquisa Agropecuaria Brasileira, vol. 5, no. 1, Apr. 2014, pp. 183-07, doi:10.1590/S1678-3921.pab1970.v5.17655.