@article{taubmann:1992:pcf,
    author = {Taubmann, G.},
     title = {Parabolic cylinder functions $U(n,x)$ for natural
              $n$ and positive $x$},
   journal = {Comput. Phys. Commun.},
  fjournal = {Computer Physics Communications},
    volume = {69},
     pages = {415–419},
      year = {1992},
      note = {Double-precision Fortran, minimum accuracy 14S,
              maximum accuracy 21D.},
       doi = {10.1016/0010-4655(92)90179-3},
     links = {\URL[Code]{http://cpc.cs.qub.ac.uk/summaries/ACGO}}}