D. Brisbin, und M. Harwit. (2011)cite arxiv:1110.5862
Comment: 27 pages plus bibliography 4 figures 3 supplementary online figures
ascii data tables available.
D. Nicholls, M. Dopita, H. Jerjen, und G. Meurer. (2011)cite arxiv:1107.3898Comment: 13 figures, 3 table. Accepted for publication in The Astronomical Journal.