1. Johnston, R.A., and Fitzgerald, E. B., “Film Formation, Film Properties, and Film Deterioration,” Charles R. Bragdon, technical editor, Interscience Publishers Inc., New York, 1958, pp. 209–220.
2. Privett, O. S., Blank, M. L., Covell, J. B., and Lundberg, W. O., J. Am. Oil Chemists' Soc.,38, 22–27 (1961).