@article{miller:1974:lts,
    author = {Miller, Jr., Willard},
     title = {{L}ie theory and separation of variables. {I}: {P}arabolic
              cylinder coordinates},
   journal = {SIAM J. Math. Anal.},
    volume = {5},
      year = {1974},
    number = {4},
     pages = {626–643},
   mrclass = {35A25 (33A75 81.22)},
  mrnumber = {MR0372377 (51 \#8593a)},
mrreviewer = {G. R. Allcock},
       doi = {10.1137/0505063},
     zblno = {0283.33012}}