References for the numbering systems

Col	Reference

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

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

R2 Hertzsprung E. 1915, Astrophys. J. 42, 92

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

R4 Hoag A.A., et al. 1961, Publ. US. Nav. Obs. 17, 347 (pg)

R5 Hassan S.M. 1972, Mem. Soc. Astr. Italiana 43, 279

R6 Zug R.S. 1933, Lick Obs. Bull. 16, 119

R7 Francic S. 1989, Astron. J. 98, 888

R8 Geffert M., et al. 1996, Astron. Astrophys. Suppl. 118, 277

R9 Zdanavicius J., et al. 2005, Baltic Astron. 14, 179 (No > 1000)


Back to the form