Giang, P. M., L. T. Hong Dung, and P. T. Son. “Chemical Transformation of Ent-Kaurane-Type Diterpenoids from Croton Tonkinensis Gagnep. I - Hydrolysis, Acetylation, and Oxydation of Ent-18-Acetoxy-7beta-Hydroxykaur-165-En- 15-One”. Vietnam Journal of Chemistry, vol. 45, no. 3, Sept. 2014, p. 382, doi:10.15625/4773.