@misc{indiciae1720f31ee157,
  title = {Comments on a PLC relationship for Cepheids and on the comparison between pulsation and evolution masses for Cepheids.},
  author = {Iben, I., Jr. and Tuggle, R. S.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19730032532},
  note = {Source identifier: 19730032532}
}