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This paper has been withdrawn by the author due to an error.

This submission has been withdrawn by arXiv administrators due to inappropriate text reuse from external sources

This submission has been withdrawn at the request of the author.

This paper has been withdrawn by the author.

Withdrawn by arXiv administration because authors have forged affiliations and acknowledgements, and have not adequately responded to charges [hep-th/9912039] of unattributed use of verbatim material.

This preprint has been withdrawn. It is because I will never publish this preprint since everything has been contained in my new preprint: arXiv:0907.1506. Please refer to arXiv:0907.1506. Please do not cite this preprint any more.

The paper has been withdrawn.

This paper has been withdrawn by the author.

This paper was withdrawn by arXiv admin due to authors' misrepresentation of identity/affiliation.

The paper has been withdrawn by the author, due to it being fundamentally flawed. The author apologizes for any inconvenience it may have caused.

This paper has been withdrawn by the author due a few mistakes in the paper.

The paper is withdrawn by the authors and replaced be an improved and extended version arxiv: 0812.2968

This submission has been withdrawn by arXiv administrators because it contains excessive and unattributed reuse of content from other authors.

This article has been replaced by arXiv:0807.3093

This paper has been removed by arXiv administrators because it plagiarizes hep-th/0311050, gr-qc/0306101, gr-qc/9601044, gr-qc/0511106, gr-qc/0303034, and gr-qc/0212018.

This paper has been withdrawn by the author due to an error.

The authors are not satisfied about the analysis.

This paper has been withdrawn by the author(s), due the final version in math.QA/0604564

This paper has been withdrawn because the author no longer believes the firewall argument is correct.

This paper has been withdrawn by the author due to similarity to Author's other paper