Col Reference --- --------- R1 Piatti A.E., et al., 2009, New Astronomy 14, 97 R2 Carraro G., et al. 2013, Mon. Not. R. Astron. Soc. 428, 502 Back to the form
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R1 Piatti A.E., et al., 2009, New Astronomy 14, 97
R2 Carraro G., et al. 2013, Mon. Not. R. Astron. Soc. 428, 502