Diaz, P. S., C. T. Vendruscolo, and J. L. S. Vendruscolo. “Xanthan Rheological: A Review about the Influence of Electrolytes on the Viscosity of Aqueous Solutions of Xanthan Gums”. Semina: Ciências Exatas E Tecnológicas, vol. 25, no. 1, July 2004, pp. 15-28, doi:10.5433/1679-0375.2004v25n1p15.