1. Bernoulli numbers and Bessel polynomials;Al-Salam;Duke Math. J.,1959
2. Classical orthogonal polynomials;Andrews,1985
3. Irrationalité de ζ(2) et ζ(3);Apéry;Astérisque,1979
4. A recursive relation generalizing those of Apéry;Askey;J. Austral. Math. Soc.,1984
5. F. Beukers, A note on the irrationality of ζ(2) and ζ(3), Bull. London Math. Soc. II.