Michael J. W. Hall, and Marcel Reginatto. (2002)cite arxiv:quant-ph/0201084Comment: Latex, 6 pages, contribution to the symposium "100 Years of Werner Heisenberg - Works and Impact" in Bamberg, to appear in Fortschritte der Physik.
Andreas Albrecht. (2002)cite arxiv:astro-ph/0210527Comment: 34 pages including 10 figures. To appear in "Science and Ultimate Reality: From Quantum to Cosmos", honoring John Wheeler's 90th birthday. J. D. Barrow, P.C.W. Davies, & C.L. Harper eds. Cambridge University Press 2003 V3: Final version submitted to the editors. Differences from V2: Only added references and fixed typos.
Michael Wood. (2009)cite arxiv:0912.3878Comment: The essential argument is unchanged from previous versions, but the paper has been largely rewritten, the argument extended, and more examples and background context included. 21 pages, 3 diagrams, 3 tables.