References for the numbering systems

Col	Reference

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

R1 Lindoff U. 1968, Ark. Astr. 4,587 (1-117)

R2 Claria J.J., Lapasset E. 1986, Astron. J. 91, 326 (118-181)

R3 Ramsay G., Pollaco D.L. 1992, Astron. Astrophys. Suppl.

R4 Paunzen E., Maitzen H.M. 2001, Astron. Astrophys. 373, 153


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