Aita, C., Giacomini, S. J., & Hübner, A. P. (2007). Nitrification of ammoniacal nitrogen from pig slurry in soil under no-tillage. Pesquisa Agropecuaria Brasileira, 42(1), 95–102. https://doi.org/10.1590/S1678-3921.pab2007.v42.7540