1. N. H. Nachtrieb, Spectrochemical Analysis, New York (1950).
2. L. H. Ahrens and S. R. Taylor, Spectrochemical Analysis, Addison-Wesley, Reading, Mass. (1961).
3. D. L. Malm, in Physical Measurement and Analysis of Thin Films (E. M. Murt and W. G. Guldner, eds.) Plenum Press, New York (1969).
4. R. K. Skogerboe, in Inorganic Mass Spectrometry (A. J. Ahearne, ed.) Academic Press, New York (1972).
5. R. K. Skogerboe and G. H. Morrison, in Treatise on Analytical Chemistry (I. M. Kolthoff and P. J. Elving, eds.) Part 1, Vol. 9, John Wiley & Sons, New York (1971).