Col Reference --- --------- R1 Carraro G., Costa E. 2007, Astron. Astrophys. 464, 573 R2 Carraro G., et al. 2010, Astrophys. J. 718, 683 Back to the form
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R1 Carraro G., Costa E. 2007, Astron. Astrophys. 464, 573
R2 Carraro G., et al. 2010, Astrophys. J. 718, 683