@article{articleaf324843,
title   = {Development of a flow injection system with two analytical paths for ammonium determination in soil extracts by conductometry},
author = {Reis, Boaventura Freire dos and Vieira, Jonas Alves and Krug, Francisco José and Giné-Rosias, Maria Fernanda Georgina},
year = {1997},
doi = {10.1590/s0103-50531997000500015},
journal   = {Journal of Brazilian Chemical Society}
}