References for the numbering systems

Col	Reference

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

R1 Cuffey J. 1937, Harvard Coll. Obs. Ann. 105, 403

R2 Hoag A.A., et al. 1961, Publ. US Nav. Obs. 17, 347 (pe)

R3 Hoag A.A., et al. 1961, Publ. US Nav. Obs. 17, 347 (pg)

R4 Cuffey J. 1973, Astron. J. 78, 408

R5 Hiltner W.A. 19 , Iau Symp. no 24, 373

R6 Massey P., et al. 1995, Astrophys. J. 454, 151

R7 Vallenari A., et al. 1999, Astron. Astrophys. 349, 825

R8 Sharma S., et al. 2007, Mon. Not. R. Astron. Soc. 380, 1141

R9

R10

R11

R12

R13 Moffat A.F.J., Vogt N. 1974, Veroeff. Astr. Inst. Univ. Bochum no 2

R14 Cuffey J. 1973, Astron. J. 78, 747


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