Boeira, Rita Carla, Marcos Antonio Vieira Ligo, and José Flávio Dynia. 2002. “Nitrogen Mineralization in a Tropical Soil Amended With Sewage Sludges”. Pesquisa Agropecuaria Brasileira 37 (11):1639-47. https://doi.org/10.1590/S1678-3921.pab2002.v37.6512.