Related papers: A Simple Performance Analysis of a Core Node in an…

This paper has been withdrawn by the author due to rewritting and skipping crucial sign errors.

This submission to arXiv has been withdrawn by the authors

The paper has been withdrawn.

This paper has been withdrawn by the authors.

This paper has been withdrawn by the author due to essential mistakes in some previous versions.

This paper has been withdrawn by the author: it was a too preliminary version.

The paper was withdrawn by the authors

This paper is withdrawn.

This paper is withdrawn.

The paper was retracted.

This paper has been withdrawn by the author due to the inaccurate result.

This paper has been withdrawn by the author and replaced by arXiv:0809.4751

Paper has been withdrawn.

This paper has been withdrawn by the author due to a crucial error in the submission action.

This paper has been withdrawn by the author, as it is now incorporated in 0901.4506 (v4)

This paper has been withdrawn by author.

This paper has been withdrawn by the authors.

This paper has been withdrawn by the author, since most of the results have been published before.

This paper has been withdrawn by the author due to a new work in [arXiv:0901.0456v4] which can contain the results in this paper.

This paper has been withdrawn by the author, due a crucial error in the main idea.