@article{gustafson:1987:mst,
    author = {Gustafson, R. A.},
     title = {Multilateral summation theorems for ordinary and basic
              hypergeometric series in {${\rm U}(n)$}},
   journal = {SIAM J. Math. Anal.},
  fjournal = {SIAM Journal on Mathematical Analysis},
    volume = {18},
      year = {1987},
    number = {6},
     pages = {1576–1596},
      issn = {0036-1410},
     coden = {SJMAAH},
   mrclass = {33A30 (22E30 33A75)},
  mrnumber = {MR0911651 (90e:33015)},
       doi = {10.1137/0518114},
     zblno = {0624.33012}}