Speckle observations with PISCO in Merate: IV. Astrometric measurements of visual binaries in 2005, M. Scardia et al., Astronomische Nachrichten329, #1 (2008), pp. 54–68. Bibcode:2008AN....329...54S.
Speckle interferometric measurements of binary stars. VI, H. A. McAlister and E. M. Hendry, Astrophysical Journal Supplement Series48 (March 1982), pp. 273–278. Bibcode:1982ApJS...48..273M.
R. F. Griffin (Σεπτέμβριος 2011). «Spectroscopic Binaries: Towards the 100-Year Time Domain». Proceedings of the International Astronomical Union7: 75-80. doi:10.1017/S1743921312000282.
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Speckle observations with PISCO in Merate: IV. Astrometric measurements of visual binaries in 2005, M. Scardia et al., Astronomische Nachrichten329, #1 (2008), pp. 54–68. Bibcode:2008AN....329...54S.
Speckle interferometric measurements of binary stars. VI, H. A. McAlister and E. M. Hendry, Astrophysical Journal Supplement Series48 (March 1982), pp. 273–278. Bibcode:1982ApJS...48..273M.