References for the numbering systems

Col	Reference

---	---------

R1	Janes K.A. 1981, Astron. J. 86,1210

R2	Paunzen E., Maitzen H.M. 2002, Astron.Astrophys. 385, 867

R3	Prisinzano L., et al. 2004, Astron. Astrophys. 417, 945 (T5)

R4	Prisinzano L., et al. 2004, Astron. Astrophys. 417, 945 (T6)

R5	Bragaglia A., et al. 2006, MNRAS 366, 1493

R6	Bonatto C., Bica E. 2006, Astron. Astrophys. 455, 931

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