1. B. M. Glennon and W. L. Wiese, Bibliography on Atomic Transition Probabilities, Natlonal Bureau of Standards monograph No. 50 (1962).
2. E. W. Foster, Rep. Progr. Phys. 27, 469 (1964).
3. W. Neumann, in Progress in Plasmas and Gas Electronics, Eds. R. Rompe and M. Steenbeck, Vol. 1, pp. 1–512, Akademie-Verlag, Berlin (1975).
4. W. L. Wiese, in Methods of Experimental Physics, Vol. 7A, Eds. B. Bederson and W. L. Fite, pp. 117–141, Academic Press, New York (1968).
5. M. C. E. Huber, in Modern Optical Methods in Gas Dynamic Research, Ed. D. S. Dosanjh, pp. 85–112, Plenum Press, New York (1971).