Hoang, Le, 		Phuong, Pham Thi, 		Hanh, Nguyen Thi, 		Do, Ho Ba, AND 		Huy, Nguyen Quang.
" Study of Ultrasound-assisted Acid Hydrolysis to Obtain Quercetin and their Antioxidant Activities from some Plants" <em>VNU Journal of Science: Natural Sciences and Technology</em> [Online], Volume 35 Number 4 (23 December 2019)