D. Malyshev, I. Cholis, and J. Gelfand. (2009)cite arxiv:0903.1310
Comment: 23 pages, 15 figures, 1 table; v2: minor corrections, references
added; v3: 20 pages, 10 figures, 1 table, major changes in presentation, main
conclusions unchanged; v4: minor corrections.
D. Chowdhury, C. Jog, and S. Vempati. (2009)cite arxiv:0909.1182
Comment: 11 pages,3 figures, Latex, pdftex. Pedagogical review submitted to
Current Science.