@conference{4434,
  author = {W.-R. Hamann and U. Wessolowski and E. Schwartz and G. Dunnebeil and Werner Schmutz},
  title = {High-density winds: Wolf-Rayet stars \textendash A progress report about quantitative spectral analyses},
  year = {1990},
  publisher = {San Francisco, CA, Astronomical Society of the Pacific},
  address = {Boulder, Colorado},
  url = {http://articles.adsabs.harvard.edu/full/1990ASPC....7..259H},
  note = {JILA Pub. 4176},
}