Related papers: Nonlinear System Identification and Behavioral Mod…

This paper has been withdrawn by the author due to an error.

This paper is being withdrawn.

This paper has been withdrawn by the author.

This paper has been withdrawn by the author due to similarity to the author's other paper

This paper has been withdrawn by the author due to errors and bad formalization.

This paper has been withdrawn by the author

This paper has been withdrawn due to its publication

This paper has been withdrawn by the author: it was a too preliminary version

This paper has been withdrawn by the author: it was a too preliminary version.

This paper has been withdrawn by the author due to a crucial error in the definition of homomorphism.

This paper has been withdrawn by the author: it was a too preliminary version.

This paper has been withdrawn by the author(s), due the final version in math.QA/0604564

This paper has been withdrawn by the author due to its publication

This paper has been withdrawn.

This paper has been withdrawn by the author.

This paper was withdrawn by the authors.

The paper has been withdrawn.

This paper has been withdrawn.

This paper has been withdrawn

This paper has been withdrawn while the author verifies the literature.