@article{dean:1966:cqm,
    author = {Dean, P.},
     title = {The constrained quantum mechanical harmonic oscillator},
   journal = {Proc. Cambridge Philos. Soc.},
    volume = {62},
      year = {1966},
     pages = {277–286},
   mrclass = {81.34},
  mrnumber = {MR0191295 (32 \#8703)},
mrreviewer = {T. Erber},
       doi = {10.1017/S0305004100039840}}