Ardiles, A. E., González-Rodríguez, Á., Núñez, M. J., Perestelo, N. R., Pardo, V., Jiménez, I. A., Valverde, Á. M., & Bazzocchi, I. L. (2012). Studies of naturally occurring friedelane triterpenoids as insulin sensitizers in the treatment type 2 diabetes mellitus. Phytochemistry, 84, 116-124. https://doi.org/10.1016/J.PHYTOCHEM.2012.07.025