1. H.F. Sterling and R.C.G. Swann, Solid State Electronics8, 653 (1965).
2. J. Ogier, Compt. Rend., 89, 1068, (1879).
3. M. Berthelot, Annales de Chimie et de Physique, 5e serie, t.X. p. 76.
4. Plasma Chemistry in Electrical Discharges, F.K. McTaggert, Elsevier Publishing Co. (1967).
5. Transport Phenomena, Bird, Steward and Lightfoot, John Wiley & Son, (1960), p. 114.