@conference{7641,
  author = {G. Basri and R. Laurent and F. Walter},
  title = {Period-activity relations in close binary systems},
  year = {1983},
  publisher = {Dordrecht, D. Reidel Publishing Co.},
  address = {Zurich, Switzerland},
  url = {http://adsabs.harvard.edu/full/1983IAUS..102..199B},
  note = {JILA Pub. 2774},
}