References for the numbering systems

Col	Reference

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

R1 Ahmed F. 1962, Publ. Royal Obs. Edinburgh 3, 60

R2 Sher D. 1965, Mon. Not. R. Astr. Soc. 129, 237

R3 Yilmaz F. 1976, Astron. Astrophys. Suppl. 26, 17

R4 Winnenburg W. 1973, Astron. Astrophys. 24, 157 (thesis)

R5 Gould B.A. 1897, Cordoba Photographs, cluster XXVI

R6 Ahmed F. 1962, Publ. Royal Obs. Edinburgh 3, 60 (seq. pe)

R7 Moitinho A., et al. 1997, Astron. J. 113, 1359

R8 Piatti A.E., et al. 1998, Astrophys. J. Suppl. 116, 263

R9 McSwain M.V., Gies D.R. 2005, Astrophys. J. 622, 1052


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