1. Abromwitz, M., Stegun, I. (1965): Handbook of Mathematical Functions (Dover, New York)
2. Bekefi, G. (1966): Radiation Processes in Plasmas (Wiley, New York)
3. Reif, F. (1965): Fundamentals of Statistical and Thermal Physics (McGraw-Hill, New York)
4. Sobolev, V.V. (1963): A Treatise on Radiative Transfer (D. Van Nostrand, Princeton)
5. Stix, T. H. (1962): The Theory of Plasma Waves (McGraw-Hill, New York)