@article{117141,
  author = {F Walter and F Vrba and R Mathieu and A Brown and P Myers},
  title = {X-ray sources in regions of star formation. V. The low mass stars of the Upper Scorpius association},
  year = {1994},
  number = {107},
  month = {1994-01-01},
  publisher = {Astronomical Journal},
  language = {en},
}