1. American Oil Chemists’ Society, Official and Tentative Methods, V. C. Mehlenbacher and T. H. Hopper, editors, Chicago, Ill., 1951, Method Ba 2-38.
2. Ibid., American Oil Chemists’ Society, Official and Tentative Methods, V. C. Mehlenbacher and T. H. Hopper, editors, Chicago, Ill., 1951, Method Ba 3-38.
3. Ibid., American Oil Chemists’ Society, Official and Tentative Methods, V. C. Mehlenbacher and T. H. Hopper, editors, Chicago, Ill., 1951, Method Ba 4-38.
4. Ibid., American Oil Chemists’ Society, Official and Tentative Methods, V. C. Mehlenbacher and T. H. Hopper, editors, Chicago, Ill., 1951, Method Ba 7-50.
5. Ibid., American Oil Chemists’ Society, Official and Tentative Methods, V. C. Mehlenbacher and T. H. Hopper, editors, Chicago, Ill., 1951, Method Ca 9a 41.