Lien, Do, 		Phuc, Do, 		Lien, Pham, 		Trang, Ngo, 		Kien, Tran, 		Lien, Tran, AND 		Tien, Kim.
" Effect of Sweet potato (Ipomoea batatas (L.) Lam) leaf extract on  hypoglycaemia, blood insulin secretion, and key carbohydrate metabolic enzymes in expermentally obese and STZ-induced diabetic mice" <em>VNU Journal of Science: Natural Sciences and Technology</em> [Online], Volume 27 Number 2 (15 June 2011)