@article{urwin:1964:wh,
    author = {Urwin, Kathleen M.},
     title = {Integral equations for paraboloidal wave functions. {I}},
   journal = {Quart. J. Math. Oxford Ser. (2)},
    volume = {15},
      year = {1964},
     pages = {309–315},
   mrclass = {33.30},
  mrnumber = {MR0179395 (31 \#3643)},
mrreviewer = {J. Meixner},
       doi = {10.1093/qmath/15.1.309},
     zblno = {0126.31503}}