Giacomini, Sandro José, et al. “Nitrogen Transformations in Soil After the Addition of Pig Slurry and Pig Deep‑litter”. Pesquisa Agropecuaria Brasileira, vol. 48, no. 2, Apr. 2013, pp. 211-9, https://doi.org/10.1590/S1678-3921.pab2013.v48.13146.