M. C. C. da Fonseca, D. L. de Almeida, H. De-Polli, and M. S. Fernandes, “Phosphorus content in the soil microbial biomass under Brachiaria decumbens Stapf”, PAB, vol. 30, no. 4, pp. 543–551, Apr. 1995, doi: 10.1590/S1678-3921.pab1995.v30.4338.