1. Uhl RS: A to Z spices – Handbook of Spices, Seasonings and Flavourings. Technomic Publishing Co. Inc., Pennsylvania, pp. 155–156, 2000
2. Pruthi JS: Spices and Condiments: Chemistry, Microbiology and Technology. Academic Press, New York, 1976, pp. 1–6 and 201–205
3. Tirtha SSS: The Ayurveda Encyclopedia – Natural Secrets to Healing, Prevention and Longevity. Sri Satguru Publications, New Delhi, 1998, p. 93
4. Svoboda ER: Ayurveda – Life, Health and Longevity. Penguin Books India (P) Ltd. New Delhi, 1992, p. 145
5. Gerrad JM: Platelet aggregation and the influence of prostaglandins. Meth Enzymol 86: 642–643, 1982