• Lim do Y et al. Am J Physiol Gastrointest Liver Physiol. 2009 May;296(5):G1060-8.
• Plant Flavonoids in Biology and Medicine, (eds. Cody, V. et al), A.R. Liss, N.Y., 1986
• Roengsumaran, S. et al., J. Sci. Res. (Bhopal, India), 2000, 25, 169-176
• Jankowska, T. et al., Acta Chim. Hung., 1962, 33, 135