Col Reference --- --------- R1 Sandrelli S., et al. 1999, Mon. Not. R. Astron. Soc. 309, 739 R2 Hartwick F.D.A., Hesser J.E. 1973, Astrophys. J. 183,883 Back to the form
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R1 Sandrelli S., et al. 1999, Mon. Not. R. Astron. Soc. 309, 739
R2 Hartwick F.D.A., Hesser J.E. 1973, Astrophys. J. 183,883