Pornpunyapat, Jutarut, Pakamas Chetpattananondh, and Chakrit Tongurai. “Mathematical Modeling for Extraction of Essential Oil from Aquilaria Crassna by Hydrodistillation and Quality of Agarwood Oil”. Bangladesh Journal of Pharmacology 6, no. 1 (July 3, 2011): 18-24. Accessed September 26, 2020. https://www.banglajol.info/index.php/BJP/article/view/7902.