References

• Brosche P., Sinachopoulos D., 1988, Bull. Inform. CDS 34, 34-65
• Brosche P., Sinachopoulos D., 1989, Bull. Inform. CDS 36, 3-21
• ESA, 1997, The Hipparcos Catalogue, ESA SP-1200
• Graham J.A., 1982, PASP 424, 244-263
• Grenon M., 1991 (private communication)
• Nakos Th., Sinachopoulos D., van Dessel E., 1997, A&AS 124, 353-357 NASA ADS
• Worley C.E., Douglass G.G., 1984, The Washington Visual Double Star Catalog, Publ. U.S. Naval Obs. (magnetic tape)