@article{bailey:1928:pgh,
    author = {Bailey, W. N.},
     title = {Products of generalized hypergeometric series},
   journal = {Proc. London Math. Soc. (2)},
  fjournal = {Proceedings of the London Mathematical Society. Second Series},
    volume = {28},
      year = {1928},
    number = {2},
     pages = {242–254},
       doi = {10.1112/plms/s2-28.1.242},
     zblno = {54.0392.04}}