Álvarez Lario, Darío Ángel, et al. “Phytochemical Screening and Evaluation of the Antioxidant Activity of Ethanolic Extracts of Bursera Graveolens (Burseraceae)”. Revista Productos Naturales, vol. 5, no. 2, July 2022, pp. 121-2, https://doi.org/10.3407/rpn.v5i1.6879.