Jones, D. Heath; Read, Mike A.; Saunders, Will; Colless, Matthew; Jarrett, Tom; Parker, Quentin A.; Fairall, Anthony P.; Mauch, Thomas και άλλοι. (Οκτώβριος 2009), «The 6dF Galaxy Survey: final redshift release (DR3) and southern large-scale structures», Monthly Notices of the Royal Astronomical Society399 (2): 683–698, doi:10.1111/j.1365-2966.2009.15338.x
Mould, Jeremy R. και άλλοι. (2000). «The Hubble Space Telescope Key Project on the Extragalactic Distance Scale. XXVIII. Combining the Constraints on the Hubble Constant». The Astrophysical Journal529 (2): 786-794. doi:10.1086/308304. Bibcode: 2000ApJ...529..786M.
Mould, Jeremy R. και άλλοι. (2000). «The Hubble Space Telescope Key Project on the Extragalactic Distance Scale. XXVIII. Combining the Constraints on the Hubble Constant». The Astrophysical Journal529 (2): 786-794. doi:10.1086/308304. Bibcode: 2000ApJ...529..786M.