@article{Hillwig:2007pT,
  author = "Hillwig, Todd  and  Gies, Doug",
  title = "{Spectroscopic Observations of the Mass Donor Star in SS 433 }",
  doi = "10.22323/1.033.0077",
  journal = "PoS",
  year = 2007,
  volume = "MQW6",
  pages = "077"
}