1. Determination of Oleanolic and Ursolic Acids in Hedyotis diffusa Using Hyphenated Ultrasound-Assisted Supercritical Carbon Dioxide Extraction and Chromatography. (18th May 2015) Authors: Wei, Ming-Chi; Yang, Yu-Chiao; Hong, Show-Jen Other Names: Chen Shilin Academic Editor. Journal: Evidence-based complementary and alternative medicine Issue: Volume 2015(2015) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗