@article{117686,
  author = {W Schmutz and W Vacca},
  title = {Determinations of the interstellar reddening toward Wolf-Rayet stars of the nitrogen sequence from observed ubv color indices},
  year = {1991},
  number = {89},
  month = {1991-01-01},
  publisher = {Astron Astrophys Suppl},
  language = {en},
}