1. Armstrong, B. H. and Nicholls, R. W.: 1972,Emission, Absorption and Transfer of Radiation in Heated Atmospheres, Pergamon Press, New York.
2. Buschman, R. G.: 1982,Pure Appl. Math. Sci. 16, 23.
3. Erdélyi, A., Magnus, W., Oberhettinger, F., and Tricomi, F. G.: 1953,Higher Transcendental Functions, Vol. I, McGraw-Hill, New York.
4. Erdélyi, A., Magnus, W., Oberhettinger, F., and Tricomi, F. G.: 1954,Tables of Integral Transforms, Vol. I, McGraw-Hill, New York.
5. Exton, H.: 1981,J. Phys. A: Math. Gen. 14, L75.