dos Santos, T. de A. D., D. O. da Costa, S. S. da R. Pita, and F. S. Semaan. “Potentiometric and Conductimetric Studies of Chemical Equilibria for Pyridoxine Hydrochloride in Aqueous Solutions: Simple Experimental Determination of PKa Values and Analytical Applications to Pharmaceutical Analysis”. Eclética Química, vol. 35, no. 4, Dec. 2010, pp. 81-86, doi:10.26850/1678-4618eqj.v35.4.2010.p81-86.