References for the numbering systems

Col	Reference

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

R1 Kopf E. 1943, Astr. Nach. 274, 93 -- Mitt. Hamburg Bergedorf no 52 --

R2 Hiltner W.A., Iriarte B., Johnson H.L. 1958, Astrophys. J. 127, 539

R3 Vogt H. 1921, Astr. Nach. 216, 171

R4 Graff K., Kruse W. 1921, Astr. Nach. 214, 171

R5 Vasilevskis S., et al. 1958, Astron. J. 63, 387

R6 Brown F.L. 1918, Astron. J. 31, 57

R7 Wolf M. 1890, Astr. Nach. 126, 297

R8 Valentiner 1877, Astr. Beob. Sternw. Mannheim III

R9 Nijland 1897, Utrecht

R10 Sanders W.L. 1973, Astron. Astrophys. Suppl. 9, 213

R11 Latypov A.A. 1972, Tsirk. Astr. Inst. Tashkent no 42 (389)

R12 Mathews R.T. 1963, Publ. Goodsell Obs. no 14

R13 Jeffries R.D. 1997, Mon. Not. R. Astr. Soc. 292, 177 (No 1-56)

R13 Jeffries R.D. 2002, Mon. Not. R. Astr. Soc. 336, 1109 (No 57-104)

R14 Piatti A.E., et al. 1998, Astrophys. J. Suppl. 116, 263

R15 Stetson P.B. 2000, Publ. astron. Soc.Pacific 112, 925

R16 Harmer S., et al. 2001, Mon. Not. R. Astron. Soc. 324, 473


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