Fernández-Bobey, MSc. Antonio, et al. “Triterpenes With Anti-Inflammatory Activity Isolated from the Bark of the Endemic Species Maytenus Elaeodendroides, Griseb”. Revista Cubana De Química, vol. 32, no. 1, Mar. 2020, pp. 60-72, https://cubanaquimica.uo.edu.cu/index.php/cq/article/view/5126.