1. W.Gunawan , Quality and value of essential oils, implications on the development of essential oil derivatives (in Bahasa Indonesia) , Paper presented at the National Seminar with the theme: Chemistry with vision SETS (Science, Environment, Technology, Society) contribution to the advancement of education and industry, organized by the Indonesia Chemical Association Central Java , Semarang , March 21, 2009
2. Molecular Dynamic Simulation of the Patchouli Oil Extraction Process