“…A further comparison between the three kinds of analogue is shown by the three Gauss hypergeometric sum formulae in terms of gamma functions, q-shifted gamma functions as given in Askey [11,12,13] for example, and (perhaps) D-shifted gamma functions. These are, for various conditions given in respectively, Bailey [15, pages 2-3], Gasper and Rahman [27, pages 9-11], and the author's paper [23], as…”