1. M. A. Cayless, in Residual gases in electron tubes, p. 109–122, Academic Press, London, New York (1972).
2. H. J. Eppig, J. of the Illum. Engng. Soc.12/1, 34 (1982).
3. M. Poppe, I. Cserteg, Automatizálás.21/11, 17 (1988).
4. C. J. Cowper, A. J. DeRose, The Analysis of Gases by Chromatography, p. 55, Pergamon Press, Oxford (1985).
5. É. Bíró, S. Reznik, Analysis of Gaseous Impurities in the Filling Gas of Lamps by Means of Quadrupole Mass Spectrometer. Paper presented at the Fourth Yugoslav-Austrian-Hungarian Vacuum Conference, 20–23 Sept. 1988, Portoroz, Yugoslavia.