==Publications==*“Theses on Semiology and Semiotics”, "The American Journal of Semiotics" 26.1–4 (2010), 17–25.
Johnson: "The Theory of Uniform Polytopes and Honeycombs", Ph.D. Dissertation, University of Toronto, 1966*Four-dimensional Archimedian Polytopes (German), Marco Möller, 2004 PhD dissertation [http://www.sub.uni-hamburg.de/opus/volltexte/2004/2196/pdf/Dissertation.pdf]