@article{askey:1986:ipu,
    author = {Askey, Richard and Koornwinder, Tom H. and Rahman, Mizan},
     title = {An integral of products of ultraspherical functions and a
              {$q$}-extension},
   journal = {J. London Math. Soc. (2)},
  fjournal = {Journal of the London Mathematical Society. Second Series},
    volume = {33},
      year = {1986},
    number = {1},
     pages = {133–148},
      issn = {0024-6107},
     coden = {JLMSAK},
   mrclass = {33A45 (33A40)},
  mrnumber = {MR0829394 (87d:33020)},
mrreviewer = {David M. Bressoud},
     zblno = {0564.33008}}