Comparative Studies on Antioxidant Activity, Total Phenol Content and High Performance Thin Layer Chromatography Analysis of Seabuckthorn (Hippophae rhamnoides L) Leaves, Singh, Amrit Kumar, Attrey Dharam Paul, and Naved Tanveer , Pharmacognosy Journal, 2nd July 2014, Volume 6, Issue 5, p.5-8, (2014)