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3. Y. L. Luke, The Special Functions and Their Approximations, Vol. 1 & 2, Academic Press, New York, 1968.
4. Chebyshev polynomial expansion of Bose-Einstein functions of orders 1 to 10;Ng, Edward W.;Math. Comp.,1969
5. National Bureau of Standards Applied Mathematics Series, No. 55;Abramowitz, Milton,1964