REFERENCES
Abramowitz, M. and Stegun, I. A. (Eds.). Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables, 9th printing. New York: Dover, p. 260, 1972.

Arfken, G. “The Incomplete Gamma Function and Related Functions.” §10.5 in Mathematical Methods for Physicists, 3rd ed. Orlando, FL: Academic Press, pp. 565-572, 1985.

Wall, H. S. Analytic Theory of Continued Fractions. New York: Chelsea, 1948.

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