@article{rodrigues_oliveira_silveira_santos_2011,  title={Chemical dispersants and pre-treatments to determine clay in soils with different mineralogy},  volume={35},  ISSN={0100-0683},  url={https://doi.org/10.1590/S0100-06832011000500013},  DOI={10.1590/S0100-06832011000500013},  number={5},  journal={Revista Brasileira de Ciência do Solo},  publisher={Sociedade Brasileira de Ciência do Solo},  author={Rodrigues, Cristiane and Oliveira, Virlei Álvaro de and Silveira, Pedro Marques da and Santos, Glenio Guimarães},  year={2011},  month={Sep},  pages={1589–1596} }