...(Durret et al. 1998b)[*]
At z=0.0555, 1 arcmin  =90.5  h50-1 kpc, assuming $\Omega_{\rm M}=0.3$, $\Omega_\Lambda=0.7$.
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... Release[*]
Sloan Didital Sky Survey: http://www.sdss.org/dr2/
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Copyright ESO 2005