Andréa, Mara M. de, et al. “Dissipation of ¹⁴C-DDT in Soil under Controlled Temperature and Field Conditions”. Pesquisa Agropecuaria Brasileira, vol. 26, no. 10, Oct. 1991, pp. 1691-8, doi:10.1590/S1678-3921.pab1991.v26.3513.