References for the numbering systems

Col	Reference

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

R1	Kaluzny J., et al. 1996, Astron. Astrophys, Suppl. 118, 303 (Table 15)

R2	Kaluzny J., et al. 1996, Astron. Astrophys, Suppl. 118, 303 (Table 14)

R3	Hawarden T.G. 1975, Mon. Not. R. Astr. Soc. 173,801

R4	van den Bergh S. 1977, Astrophys. J. 215, 89

R5	Bonifazi A., et al 1990, Mon. Not. R. Astr. Soc. 245, 15

R6	Bergbush P.A., et al. 1991, Astron. J. 101, 2102

R7	Anthony-Twarog B.J., et al. 2005, Astron. J. 129, 872

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