K. Muñoz, N. Cortés, A. Pujol, E. Osorio, J. Calderón, and J. Londoño, “Determination of antioxidant activity in herbal ingredients for foods using new methods of chemical analysis”, Sci. agropecu, vol. 3, no. 2, pp. 133–137, Jun. 2012, doi: 10.17268/sci.agropecu.2012.02.04.