Related papers: Rossby Waves in the Quantum Hall effect

This paper has been withdrawn due to crucial errors.

This paper has been withdrawn, because the result turned out to be well known.

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This paper has been withdrawn by the author due to a crucial sign error in equation 1.

This paper has been withdrawn by the author(s) due to the discussion was made on the basis of linear term merely, which is incomplete.

This paper has been withdrawn by the author due to a misunderstanding.

This paper was withdrawn as it may have appeared elsewhere, although in a different form.

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This paper has been withdrawn by the authors. We have discovered an error in the evaluation of the diagram, which invalidates our conclusion.

This paper has been withdrawn by the author(s). Please see arXiv:0711.3910 for revision.

The paper was withdrawn by the author. Further research is needed.

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The paper was withdrawn by the author. It contained various errors.

This paper has been withdrawn due to an error, and no further revisions will be made.

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This paper has been withdrawn by the author, since some results of the paper have been already obtained in [J.~Lewandowski, Class. Quantum Grav. 9 (1992), no. 10, L147--L151.]

This paper has been withdrawn by the author.

This paper has been withdrawn.