@article{articlee6374961,
title   = {Merging zones in flow injection analysis: Part 6. Determination of calcium in natural waters, soil and plant materials with glyoxal bis(2-hydroxyanil)},
author = {Jacintho, Antonio Octavio and Zagatto, Elias Ayres Guidetti and Reis, Boaventura Freire dos and Pessenda, Luiz Carlos Ruiz and Krug, Francisco José},
year = {1981},
journal   = {Analytica Chimica Acta}
}