Related papers: On Superstring and Supergravity Dimensions

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This paper has been withdrawn by the author, due to errors in the figures.

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The paper is withdrawn by the author due to an oversimplified and misleading approach which was taken initially as a starting point.

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This paper has been withdrawn by the authors. Significantly revised versions of the results of this paper are now available in arXiv:0707.0487v2 and arXiv:0808.3169v1.

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