References for the numbering systems

Col	Reference

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

R1 Hoag A.A., et al. 1961, Publ. US Nav. Obs. 17, 347 (pe)

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

R3 Moffat A.F.J. 1971, Astron. Astrophys. 13, 30

R4 Mathews R.T. 1963, Publ. Goodsell Obs. no 14

R5 Ishmukamedov Kh.Z. 1966, Tsirk. Astr. Obs. Tashkent no 347

R6 Chavarria-K. C., et al. 1994, Astron. Astrophys. 283, 963

R7 Li-Khen 1954, Ann. Obs. Astr. Zo-Se vol XXIII

R8

R9

R10

R11

R12

R13

R14 Moffat A.F.J., Vogt N. 1974, Veroeff. Astr. Inst. Univ. Bochum no 2


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