Groups of galaxies in the SDSS Data Release 5 - A group-finder and a catalogueE. Tago, J. Einasto, E. Saar, E. Tempel, M. Einasto, J. Vennik and V. MüllerA&A, 479 3 (2008) 927-937DOI: https://doi.org/10.1051/0004-6361:20078036
