References for the numbering systems

Col	Reference

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

R1	Becker W., et al. 1976, Astr. Inst. Univ. Basel  Katalogue...

R2	Ramsay G., Pollaco D.L. 1992, Astron. Astrophys. Suppl.

R3	Topatkas L. 1981, Astron. Astrophys. Supp. 45, 111

Back to the form