@article{tolstikhin:2001:heh,
    author = {Tolstikhin, O. I. and Matsuzawa, M.},
     title = {Hyperspherical elliptic harmonics and their
              relation to the {H}eun equation},
   journal = {Phys. Rev. A},
  fjournal = {Physical Review A},
    volume = {63},
      year = {2001},
    number = {032510},
     pages = {1–8},
       doi = {10.1103/PhysRevA.63.032510}}