1. [AZ] Almkvist, G., Zeilberger, D.: The method of differentiating under the integral sign, (The Maple program that implements the algorithm appeared in ACM SIGSAM Bulletin25, No. 3 (July 1991), 14–17), J. Symbolic Computation10, 571–591 (1990)
2. [Ande] Anderson, G.: Letter to R. Askey
3. [Ande1] Anderson, G.: The evaluation of Selberg sums, C.R. Acad. Sci. (Ser. I: Math.)311, 469–472 (1990)
4. [An] Andrews, G.: The Theory of Partitions, Encyclopedia of Mathematics and Its Applications (G.C. Rota, Editor), vol. 2, Addison Wesley, Reading, 1976
5. CBMS series;G. Andrews,1986