TY - JOUR AU - Carl Hansen AU - W. Spangenberg BT - Astrophysical Journal DA - 02/1971 DO - 10.1086/150808 N1 - JILA Pub. 683 PY - 1971 SE - 653 SP - 653 EP - 654 T2 - Astrophysical Journal TI - Pulsational Stability of Pure-Helium Stars of Low Mass UR - http://adsabs.harvard.edu/full/1971ApJ...163..653H VL - 163 ER -