1. Piazza, G. J. and H. M. Farrell, Jr. (1991) Generation of ricinoleic acid from castor oil using the lipase from ground oat (Avena sativa L.) seeds as a catalyst. Biotechnol. Lett. 13: 179–184.
2. Schwitzer, M. K. (1997) Recent developments in castor oil products. pp. 113–114. In: V. V. S. Mani and A.D. Shitole (eds.). Fats, Oleochemicals and Surfactants: Challenges in the 21 st Century. Oxford and IBH Publishing Co. Pvt. Ltd., New Delhi, India.
3. Gunstone, F. D. and F. D. Padley (1997) Lipid Technologies and Applications. p. 31. CRC Press, Boca Raton, Florida, USA.
4. Johnson, R. W. and E. Fritz (1989) Fatty acids in Industry: Processes, Properties, Derivatives, Applications. p. 14. Marcel Dekker Inc., New York, USA.
5. Majid, S. A. and M. A. Hossain (1980) A study on the hydrolysis of fats and oils by the Twitchell reagent. Part III. Effect of the catalyst on different fats and oils. Bangladesh J. Sci. Ind. Res. 15: 107–114.