| Below the content is listed in the reverse chronological order of the first addition or last substantial modification of an item. |
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| Homepage of the paper |
| Homepage of the ongoing research |
| Homepage of the paper |
| .html (last modified on August 30, 2006) |
| .ps.gz (163Kb) .pdf.gz (164Kb) |
| .ps.gz (141Kb) .pdf.gz (145Kb) |
| .ps.gz (388Kb) .pdf.gz (365Kb) |
| .ps (483Kb) .pdf (377Kb) |
| at distinguished chair of Pacific Institute of Mathematical Sciencies in Calgary in February-March 2000 |
| streaming video from Calgary, Canada |
| at colloquium of Department of Mathematics and Statistique of the University of Calgary on March 9, 2000 |
| streaming video from Calgary, Canada |
| .ps (496Kb) |
| .ps.gz (63Kb) .pdf.gz (154Kb) |
| .ps (160Kb) .pdf (189Kb) |
| at a seminar of IREM in Paris |
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| .ps (177Kb) .pdf (263Kb) |
| .html |
| An invited lecture on this subject was presented at JAF'13 and was published in the Proceedings, ISBN 2-9511539-0-2, 119-134 (1997). |
| A version of this paper was submitted to the Electronic Journal of Combinatorics but did not meet the high standards of this Journal. |
| A version of this paper appeared in Theoretical Computer Science , 257(1-2):167--183, 2001. |
| .ps.gz (108Kb) |
| .ps (588Kb) |
| Published in Acta Arithmetica, XCI.4, 1999, 367-378 |
| .ps.gz (60Kb) .pdf.gz (131Kb) |
| .ps (147Kb) .pdf (204Kb) |
| Preliminary version of full paper: .ps |
| Originally published in The Mathematical Intelligencer, vol.14, no.4, 1992, pp.38-45 |
| .html |
| homepage of the book |
| .html (last modified on April 7, 1998) |
| .tex .dvi .ps |
| .tex .dvi .ps |
| .ps.gz |
| .html (last modified on July 4, 1997) |
| Abstract and BibTeX entry | .dvi | .ps.Z |
| abstract, | .ps (9 pages) |