1. W. Chu, Finite differences and Dixon-like Binomial sums, Integral Transforms Spec. Funct., 23(4) (2012), 251–261.
2. M. W. Coffey and S. J. Johnston, Some results involving series representations of hypergeometric functions, J. Comput. Appl. Math., 233(3) (2009), 674–679.
3. L. Euler, De progressionibus harmonicis observationes, Comm. aca. sci. Petrop., 7 (1740), 150–161. Opera omnia, 14(1), 87–100.
http://www.math.dartmouth.edu/euler/pages/E043
.
4. W. L. Ferrar, A textbook of convergence, Oxford University Press, 1947, p.74.
5. K. Knopp, Theory and applications of infinite series, Dover Publications, New York, 1990 reprint of Blackie and son, London 2nd ed. 1951, p268, ex. 107(g) and (h).