TY - JOUR AU - John Cox AU - John Castor AU - D. King BT - The Astrophysical Journal DA - Jan-02-1972 DO - 10.1086/151362 PY - 1972 EP - 423 T2 - The Astrophysical Journal TI - A Physical Interpretation of Recent Period-Luminosity Relations for RR Lyrae Variables UR - http://articles.adsabs.harvard.edu/full/1972ApJ...172..423C VL - 172 SN - 0004-637X ER -