JEPPSON, N., and G. XIANGQUN. “Changes in the Contents of Kaempherol, Quercetin and L-Ascorbic Acid in Sea Buckthorn Berries During Maturation”. Agricultural and Food Science 9, no. 1 (January 1, 2000): 17–22. Accessed July 19, 2024. https://journal.fi/afs/article/view/5652.