Sá Júnior, J. P. M. e (2014) “Evaluation of methods of chemical analysis for available phosphorus in soils of the ‘Zona Litoral-Mata’ of Pernambuco”, Pesquisa Agropecuaria Brasileira, 9(9), pp. 27–33. doi: 10.1590/S1678-3921.pab1974.v9.17247.