1. AOCS Official Method Cd 7-58 (revised 1959); JAOCS 30∶352 (1953).
2. Davenport, J.B., A.J. Birch and A.J. Ryan, Chem. Ind. 1956:136–137.
3. Sreenivasan, B.S., and J.B. Brown, JOACS 33: 521–526 (1956).
4. White, H.B., Jr., and F.W. Quackenbush, Ibid., 36: 653–656 (1959).
5. Sreenivasan, B.S., and J.B. Brown, Ibid. 35: 89–93 (1958).