相关论文: This paper has been withdrawn by the author(s)
This paper has been withdrawn.
This paper has been withdrawn by the author
This paper was withdrawn by the author. It turns out that similar ideas have been presented before. The author apologizes.
This paper has been withdrawn.
This paper has been withdrawn.
This paper has been withdrawn by the authors.
This paper has been withdrawn by the author due to errors.
This paper has been withdrawn by the author.
This paper has been withdrawn by the author due to the appearence of enlarged version with one new author name more (hep-ph/0012293).
This paper has been withdrawn by the author [arXiv admin].
This paper has been withdrawn by the authors
This paper has been withdrawn by the author due a few mistakes in the paper.
This paper has been withdrawn by the author due to the paper does not belong to Condensed Matter field.
This paper has been withdrawn. A significantly revised version will be posted in the near future.
This paper has been withdrawn by the author, due a crucial error in the main idea.
This paper was withdrawn by the author.
The paper has been withdrawn by the author.
This paper has been withdrawn by the author due to an error in the proof.
This paper was withdrawn by the authors.
The paper has been withdrawn