TY - JOUR AU - D. Winget AU - H. Van Horn AU - Carl Hansen BT - The Astrophysical Journal DA - Jan-04-1981 DO - 10.1086/183516 PY - 1981 EP - L33 T2 - The Astrophysical Journal TI - The nature of the ZZ Ceti oscillations - Trapped modes in compositionally stratified white dwarfs UR - http://articles.adsabs.harvard.edu/full/1981ApJ...245L..33W VL - 245 SN - 0004-637X ER -