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This paper has been withdrawn by the author due to a critical error in the proof of Theorem A pointed out by Burkhard Wilking.

This paper has been withdrawn by the author due to a coming paper completely superseding it.

The paper is withdrawn by the author because it is superseded by cond-mat/0303357 .

The paper has been withdrawn by the authors for modification.

The author has withdrawn this submission.

This paper has been withdrawn by the author(s), due to a crucial error in eq. 6.

This paper is withdrawn.

This paper has been withdrawn by the author, due to a significant error in section 4.3.1.

This paper has been withdrawn by the authors due to new experimental results.

This paper has been withdrawn by the author due to a crucial sign error in equation 1

This paper has been withdrawn by the authors because the paper is largely revised and improved, and to appear in Mechanics Research Communications.

This paper has been withdrawn by the authors due to the crucial wrong assumption following Eq. 9.

The paper was withdrawn by the author. Further research is needed.

This paper has been withdrawn by the authors due to substantial changes.

This paper has been withdrawn.

This paper has been withdrawn by the author due to rewritting and skipping crucial sign errors.

This paper has been withdrawn by the author, due to a crucial error in the proof of Thm.1

This paper has been withdrawn by the author due to some error in the result

This paper has been withdrawn by the authors

This paper has been withdrawn because it is superseded by quant-ph/9905084 "Bayesian analysis of Bell inequalities.