@article{article4bb64722,
title   = {Soil microbial biomass in Amazonian soils: evaluation of methods and estimates of pool sizes},
author = {Feigl, Brigitte Josefine and Sparling, G P and Ross, D J and Cerri, Carlos Clemente},
year = {1995},
doi = {10.1016/0038-0717(95)00063-k},
journal   = {Soil Biology and Biochemistry}
}