TY  - RPRT
TI  - Comments on a PLC relationship for Cepheids and on the comparison between pulsation and evolution masses for Cepheids.
AU  - Iben, I., Jr.
AU  - Tuggle, R. S.
PY  - 1972
UR  - https://ntrs.nasa.gov/citations/19730032532
ID  - 19730032532
ER  -