TY - JOUR AU - A. Cox AU - R. Kidman AU - S. Starrfield AU - W. Pesnell BT - The Astrophysical Journal DA - Jan-06-1987 DO - 10.1086/165278 PY - 1987 EP - 303 T2 - The Astrophysical Journal TI - Pulsations of white dwarf stars with thick hydrogen or helium surface layers UR - http://adsabs.harvard.edu/full/1987ApJ...317..303C VL - 317 SN - 0004-637X ER -