References for the numbering systems

Col	Reference

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R1 Schmidt H., Diaz G. 1964, Veroeff. Astr. Inst. Bonn no 71

R2 Moffat A.F.J., Vogt N. 1975, Astron. Astrophys. Suppl. 20, 125

R3 Fernie J.D. 1963, Observatory 83, 33

R4 Steppe H. 1977, Astron. Astrophys. Suppl. 27, 415

R5 Johansson K.L.V. 1980, Astron. Astrophys. Suppl. 41, 43 (Area 1)

R6 Vazquez R.A., Feinstein A. 1990, Astron. Astrophys. Suppl. 86, 209

R7 McSwain M.V., Gies D.R., 2005, ApJS 161, 118

R8 Delgado A.J. et al. 2007, Astron. Astrophys. 467, 1397


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