@article{8768,
  author = {A. Cox and R. Kidman and S. Starrfield and W. Pesnell},
  title = {Pulsations of white dwarf stars with thick hydrogen or helium surface layers},
  year = {1987},
  journal = {The Astrophysical Journal},
  volume = {317},
  pages = {303},
  month = {Jan-06-1987},
  issn = {0004-637X},
  url = {http://adsabs.harvard.edu/full/1987ApJ...317..303C},
  doi = {10.1086/165278},
}