F. Vogt, E. Pérez, M. Dopita, L. Verdes-Montenegro, and S. Borthakur. (2017)cite arxiv:1701.01728Comment: 12 pages, 11 figures, accepted for publication in A&A. Supplementary movie assocociated with Fig. 8 is available (until publication) at: http://www.sc.eso.org/~fvogt/supp_mat/HCG91c/O_gradient.mp4.
R. Cooke, and M. Pettini. (2015)cite arxiv:1510.03867Comment: 10 pages, 4 figures, Accepted for publication in Monthly Notices of the Royal Astronomical Society.
T. Berg, S. Ellison, J. Prochaska, K. Venn, and M. Dessauges-Zavadsky. (2015)cite arxiv:1507.08311Comment: Accepted for publication in MNRAS. 24 Pages, 10 Figures, 4 tables. Data compilations within tarball or available upon request (contact Trystyn Berg).