@article{9632,
  author = {John Cox and John Castor and D. King},
  title = {A Physical Interpretation of Recent Period-Luminosity Relations for RR Lyrae Variables},
  year = {1972},
  journal = {The Astrophysical Journal},
  volume = {172},
  pages = {423},
  month = {Jan-02-1972},
  issn = {0004-637X},
  url = {http://articles.adsabs.harvard.edu/full/1972ApJ...172..423C},
  doi = {10.1086/151362},
}