HUAROTE, E. G.; HERRERA, N. G.; BORQUEZ, J. OBTAINING AN ACID-BASE NATURAL INDICATOR FROM THE FRUIT Punica granatum l. (POMEGRANATE): A CONTRIBUTION FOR THE SUBSTITUTION OF SYNTHETIC INDICATORS. Journal of the Chilean Chemical Society, v. 64, n. 4, p. 4593-4596, 16 Dec. 2019.