1. Andrews, G.E.: Problems and prospects for basic hypergeometric functions. In: Askey, R.A. (ed.) Theory and Application for Basic Hypergeometric Functions, Mathematics Research Center, University of Wisconsin, Publications No. 35, pp. 191–224. Academic Press, New York (1975)
2. Bauer, G.: Von den coefficienten der Reihen von Kugelfunctionen einer variabeln. J. Reine Angew. Math. 56, 101–121 (1859)
3. Borwein, J.M., Borwein, P.B.: Pi and the AGM. Canadian Mathematical Society Series of Monographs and Advanced Texts, vol. 4. Wiley, New York (1998)
4. Berndt, B.: Ramanujan’s Notebooks. Part IV. Springer, New York (1994)
5. Gasper, G., Rahman, M.: Basic Hypergeometric Series, 2nd Edition, Encyclopedia of Mathematics and Its Applications, vol. 96. Cambridge University Press, Cambridge (2004)