@article{koornwinder:1978:hfm,
    author = {Koornwinder, Tom H. and Sprinkhuizen-Kuyper, Ida},
     title = {Hypergeometric functions of {$2\times 2$} matrix argument are
              expressible in terms of {A}ppel's functions {$F_{4}$}},
   journal = {Proc. Amer. Math. Soc.},
    volume = {70},
      year = {1978},
    number = {1},
     pages = {39–42},
   mrclass = {33A30},
  mrnumber = {MR0473251 (57 \#12926)},
mrreviewer = {P. N. Rathie},
     links = {\URL[FullText]{http://links.jstor.org/sici?sici=0002-9939%28197806%2970%3A1%3C39%3AHFOMAA%3E2.0.CO%3B2-P}},
     zblno = {0394.33004}}