1. MAX JAKOB, Heat Transfer, Vol. 1, p. 258, John Wiley and Sons, Inc., New York (1949).
2. S. GLASSTONE, Principles of Nuclear Engineering, pp. 550 and 839, D. Van Nostrand Co., Inc., Princeton, NJ (1955).
3. Electrical Discharges in Gases Part II. Fundamental Phenomena in Electrical Discharges