Related papers: Sharp bounds on the critical stability radius for …

This paper has been withdrawn by the authors.

This paper has been withdrawn by the author.

This paper has been withdrawn by the author.

This paper has been withdrawn.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This paper has been withdrawn by the author due to a crucial sign error in equation 1

This paper has been withdrawn.

This paper has been withdrawn by authors for significant modification.

This paper has been withdrawn.

The paper has been temporarily withdrawn.

The paper has been withdrawn because of a more complete analysis of the relativistic fluid including the quantization reported in arxiv:0801.3032 [hep-th].

This paper has been withdrawn temporarily.

The paper has been withdrawn by authors.

This paper has been withdrawn.

The paper is withdrawn. The proof has an error and it requires a different approach.

This paper has been withdrawn by the authors because it has been merged with paper arXiv:0903.3501v1 [math.DG]

This paper has been withdrawn by the author due to a mistake.

This paper was withdrawn by the authors because it has been supplanted by gr-qc/0311007 and gr-qc/0311038.

This paper has been withdrawn by the authour.

This paper has been withdrawn by the author because the conclusions reached in it are incorrect.

This paper was withdrawn as it may have appeared elsewhere, although in a different form.