TY - JOUR AU - D. Faulkner BT - The Astrophysical Journal DA - Jan-12-1977 DO - 10.1086/155672 PY - 1977 EP - 209 T2 - The Astrophysical Journal TI - Cepheid studies. II - A third period in the beat Cepheid TU Cassiopeiae UR - http://articles.adsabs.harvard.edu/full/1977ApJ...218..209F VL - 218 SN - 0004-637X ER -