@article{tubino_souza_hoehr_2004,  title={Rapid quantitative turbidimetric spot test analysis of potassium in blood serum},  volume={15},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532004000500004},  DOI={10.1590/S0103-50532004000500004},  number={5},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Tubino, Matthieu and Souza, Rafael L. de and Hoehr, Nelci F.},  year={2004},  month={Sep},  pages={635–639} }