1. American Oil Chemists' Society, “Official and Tentative Methods,” 2nd ed., edited by V. C. Mehlenbacher, Chicago, 1946.
2. Gardner, H. A., “Physical and Chemical Examination of Paints, Varnishes, Lacquers, and Colors,” 10th ed., Inst. Paint and Varnish Research, Bethesda, Md., 1946.
3. Johnson, G. W., (to I. G. Farbenindustrie Aktiengesellschaft) Brit. Pat. 488, 381 (1938).
4. Kimm, R. H., Sci. Papers Inst. Phys. Chem. Research (Tokyo),34, 637–677 (1938).
5. Murray, K. E., and Schonfeld, R., J. Am. Oil Chem. Soc.,28, 461–466 (1951).