1. A. A. Kiselev and O. V. Kiyaeva, Sov. Astron. 24, 708 (1980).
2. The Hipparcos and Tycho Catalogues (ESA 1997). http://cdsarc.u-strasbg.fr/viz-bin/Cat’-source=I/239 .
3. B. D. Mason, G. L. Wycoff, and W. I. Hartkopf, USNO Washington Double Star Catalog 2006.5, US Naval Observatory Double Star CD, 2006.5. http://ad.usno.navy.mil/wds/request.html .
4. A. A. Kiselev, O. A. Kalinichenko, G. A. Plyugin, et al., Catalog of Relative Positions and Motions of 200 Visual Binary Stars from Observations at Pulkovo with the 26” Refractor during 1960–1986 (Nauka, Leningrad, 1986) [in Russian].
5. A. A. Kiselev, O. A. Kalinichenko, O. V. Kiyaeva, et al., Catalog of Relative Positions of Visual Binary Stars from Photographic Observations at Pulkovo with the 26” Refractor, Starting from the 1960s (2010) [in Russian]. http://www.puldb.ru