References for the numbering systems

Col	Reference

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

R1 White S.D.M. 1975, Astrophys. J. 197,67

R2 Becker W., et al 1976, Basel Kataloge von 26 Sternhaufen

R3 Zug R.S. 1933, Lick Obs. Bull. 16, 119

R4 Ramsay G., Pollaco D.L. 1992, Astron. Astrophys. Suppl. 94, 73

R5 Paunzen E., Maitzen H.M. 2002, Astron.Astrophys. 385, 867

R6 McSwain M.V., Gies D.R., 2005, ApJS 161, 118


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