Col Reference --- --------- R1 Feinstein A. 1964, Observatory 84, 111 R2 Kharchenko N.V. et al. 2005, Astron. Astrophys. 438, 1163 Back to the form
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R1 Feinstein A. 1964, Observatory 84, 111
R2 Kharchenko N.V. et al. 2005, Astron. Astrophys. 438, 1163