1. M.J. Moran, H.N. Shapiro, Fundamentals of Engineering Thermodynamics, 4th ed., Wiley, New York, 2000, pp. 256-266
2. W.C. Reynolds, H.C. Perkins, Engineering Thermodynamics, McGraw-Hill, USA, 1977, p. 223
3. The Essence of Engineering Thermodynamics;McGovern,1996
4. M. Planck, Translation by morton mausius, The Theory of Heat Radiation, Dover, New York, 1914
5. Thermodynamic energy conversion efficiencies