1. P. N. Srinivasa Rao, P. K. Ramanathan, P. RaJagopal andL. S. Subba Rao,J. Ind. Chem. Eng. 7 (1965) 72.
2. J. V. Prabhakar andK. V. L. Venkatesh,J. Am. Oil Chem. Soc. 63 (1986) 644.
3. A. Tanaka, A. Kato andT. Tsuchiya,ibid. 48 (1971) 95.
4. N. O. V. Sountag, in ?Bailey's Industrial Oil and Fat Products?, Vol. I, edited by D. Swern (John Wiley, New York, (1979) p. 407.
5. B. Panduranga Rao, S. D. Thirumala Rao andB. R. Reddy,J. Oil Tech. Assoc. India 3 (1971) 10.