The author thanks Basil Gordon for comments on an earlier
draft, and David Bressoud for providing §§27.12, 27.18,
27.19, and 27.22.
The main references used in writing this chapter are
Apostol (1976, 1990), and Apostol and Niven (1994).
Further information can be found in Andrews (1976),
Erdélyi et al. (1955, Chapter XVII),
Hardy and Wright (1979), and Niven et al. (1991).