@misc{indiciae388f03034a95,
  title = {A spectroscopic search for colliding stellar winds in O-type close binary systems. I - AO Cassiopeiae},
  author = {Gies, Douglas R. and Wiggs, Michael S.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910057580},
  note = {Source identifier: 19910057580}
}