1. Ben Howard, John Millson, Andrew Snowden, and Ravi Vakil, The ring of projective invariants of eight points on the line via representation theory, preprint (2008), 16 pages.[arXiv]
  2. Benjamin Howard, John Millson, Andrew Snowden, and Ravi Vakil, The equations for the moduli space of n points on the line, Duke Math. J. 146 (2009), no. 2, 175–226.[MR/doi]