Related papers: Low Frequency Stability of Multi-dimensional Invis…
This paper has been withdrawn due to an error in the proof of the main theorem.
There are several serious errors in this paper. I thought to have time to fix it, but it did not occur for years. So I withdraw this paper.
This paper has been withdrawn by the author. An assumption made in the analysis is not valid under the experimental conditions.
This paper has been withdrawn due to an error in figure 5.
This paper has been withdrawn by the author.
The authors have found an error in their argument, so this paper is withdrawn.
This paper has been withdrawn by the author due to a crucial error in the last lines in the proof of Lemma 3.3.
This paper has been withdrawn for the reasons mentioned in the Comments.
This paper was withdrawn by the author because severe errors were discovered.
Paper withdrawn. Replaced by by gr-qc/0212077 .
This paper has been withdrawn by the author due to some errors.
This paper has been withdrawn by the author.
The paper has been withdrawn.
This paper has been withdrawn by the authors. Because of a misunderstanding, the paper was submitted prematurely to the arXiv. A replacement will follow.
This paper has been withdrawn by the author due to essential mistakes in some previous versions.
This paper has been withdrawn by the author due to rewritting and skipping crucial sign errors.
This paper has been withdrawn by the author due to some errors.
This paper has been withdrawn by the author due to an error in the computation of the central charge.
This paper has been withdrawn by the authors in order to replace it with a more correct treatment. The basic results remain the same but the treatment is more rigorously correct.
This paper has been withdrawn.