References for the numbering systems

Col	Reference

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

R1 Williams P.M. 1967, MNASSA 26, 126

R2 Williams P.M. 1966, MNASSA 25, 122

R3 Feinstein A. 1966, PASP 78, 301

R4 Andersen T.B., Reiz A. 1983, Astron. Astrophys. Suppl. 53, 181

R5 Platais I., et al. 2001, Astron. J. 122, 1486

R6 Huensch M., et al. 2003, Astron. Astrophys. 402, 571


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