References

• Augensen H.J., et al., 1992, PASP 104, 314 NASA ADS
• Demircan O., et al., 1992, A&A 259, 577 NASA ADS
• Dommanget J., Lampens P., 1993, Astrophys. Space Sci. 200, 221-238
• Dommanget J., 1989, The Hipparcos Mission, ESA report SP 1111, Vol. II, p. 149
• Dommanget J., 1985, ESA SP-234, 153-159
• Finsen W.S., 1965, Rep. Obs. Circ. 7, 85
• Hartkopf W.I., et al., 1989, AJ 98, 1014 NASA ADS
• Hartkopf W.I., et al., 1996, AJ 111, 370 NASA ADS
• Heintz W.D., 1979, AJ 84, 1223 NASA ADS
• Hummel C.A., et al., 1994a, AJ 107, 1859 NASA ADS
• Hummel C.A., et al., 1994b, Very High Angular Resolution Imaging, IAU, 410
• Kamper K.W., et al., 1990, AJ 100, 239 NASA ADS
• Kovalevsky J., et al., 1992, A&A 258, 7-17 NASA ADS
• Kovalevsky J., et al., 1995, A&A 304, 34-43 NASA ADS
• Lindegren L., et al., 1992, A&A 258, 18-30 NASA ADS
• Lippincott S.L., et al., 1983, PASP 95, 271 NASA ADS
• Marcy G.W. et al., 1989, ApJ 341, 961 NASA ADS
• McAlister H.A., et al., 1995, AJ 110, 366 NASA ADS
• Mignard F., Söderhjelm S., Bernstein H., et al., 1995, A&A 304, 94 NASA ADS
• Mignard F., Borriello L., Kovalevsky J., Prezioso N., Bernacca P.L., 1989, The Hipparcos Mission, ESA report SP 1111, Vol. III, p. 243
• Morel P., 1988, Scientific Aspects of the Input Catalogue Preparation II. In: Torra J., Turon C.(eds.) 235-244
• Murray, et al., 1989, The Hipparcos mission, ESA report SP-1111, Vol. III, 33-49
• Pan X., et al., 1993, ApJ 413, 129
• Van Den Bos W.H., 1937, Union Obs. Circ. 4, 342
• West F.R., et al., 1981, BAAS 13, 569
• Wielen R., 1996, A&A (in press)
• Worley C.E., Heintz W.D., 1983, The fourth catalog of orbits of visual binary stars, Publ. U.S. Naval Obs. (2) 24, part VII