Oparil S. Arterial hypertension. In M. Goldman and J. Bennett (Eds.), Cecil Textbook of Medicine, 21st ed., vol.1 (pp. 258-273). Philadelphia: W. B. Saunders, 2000.
Chen Xingjian, Fang Xuwu, Liu Chengcai. Essentials of traditional Chinese medicine. Beijing: Higher Education Press, 1991.
Zhan Engin. Prescriptions of traditional chinese medicine. Shanghai: Publishing house of Shanghai college of traditional Chinese medicine, 1990.
Koo A, Chan WS, Li KM. A possible reflex mechanism of hypotensive action of extract from Cassia tora seeds. Am J Chin Med 1976; 4: 249-55.