@article{9111,
  author = {M. Groenewegen and H. Lamers and A. Pauldrach},
  title = {The winds of O-stars. II. The terminal velocities of stellar winds of O-type stars},
  year = {1988},
  journal = {Astronomy and Astrophysics},
  volume = {221},
  pages = {78-88},
  url = {http://articles.adsabs.harvard.edu/full/1989A\%26A...221...78G},
  note = {JILA Pub. 3991},
}