Croton, Darren J. Cosmology, MPI for Astrophysics, Max Planck Society;
Padilla, N. D., Baugh, C. M., Eke, V. R., Norberg, P., Cole, S., Frenk, C. S., et al. (2004). The 2dF Galaxy Redshift Survey: the clustering of galaxy groups. Monthly Notices of the Royal Astronomical Society, 352(1), 211-225. doi:10.1111/j.1365-2966.2004.07911.x/abs/.