@article{urwin:1970:wh,
    author = {Urwin, Kathleen M. and Arscott, F. M.},
     title = {Theory of the {W}hittaker-{H}ill equation},
   journal = {Proc. Roy. Soc. Edinburgh Sect. A},
    volume = {69},
      year = {1970},
     pages = {28–44},
   mrclass = {34C99},
  mrnumber = {MR0294791 (45 \#3859)},
mrreviewer = {R. K. Rathy},
     zblno = {0208.10902}}