Cross, N., Driver, S., Couch, W., Baugh, C., Bland-Hawthorn, J., Bridges, T., …Taylor, K. (2001). The 2dF Galaxy Redshift Survey: the number and luminosity density of galaxies. Monthly Notices of the Royal Astronomical Society, 324(4), 825-841. https://doi.org/10.1046/j.1365-8711.2001.04254.x