J. Fröhlich, A. Knowles, B. Schlein, and V. Sohinger. (2020)cite arxiv:2001.11714Comment: 21 pages, no figures, contribution to special volume of J. Stat. Phys. dedicated to Joel L. Lebowitz.
S. Donaldson. (1999)cite arxiv:math/9911248Comment: 16 pages. Published copy, also available at http://www.maths.warwick.ac.uk/gt/GTMon2/paper4.abs.html.